[ONOS-4350] Inter Jar dependency implementation and code restructuring.

Change-Id: Iacac75e4187aed93ce1754c170a9c19707e5b8c3
diff --git a/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/translator/tojava/TempJavaFragmentFiles.java b/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/translator/tojava/TempJavaFragmentFiles.java
new file mode 100644
index 0000000..3c35a71
--- /dev/null
+++ b/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/translator/tojava/TempJavaFragmentFiles.java
@@ -0,0 +1,1663 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.yangutils.translator.tojava;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.onosproject.yangutils.datamodel.RpcNotificationContainer;
+import org.onosproject.yangutils.datamodel.YangCase;
+import org.onosproject.yangutils.datamodel.YangLeaf;
+import org.onosproject.yangutils.datamodel.YangLeafList;
+import org.onosproject.yangutils.datamodel.YangLeavesHolder;
+import org.onosproject.yangutils.datamodel.YangList;
+import org.onosproject.yangutils.datamodel.YangNode;
+import org.onosproject.yangutils.translator.exception.TranslatorException;
+import org.onosproject.yangutils.translator.tojava.javamodel.JavaLeafInfoContainer;
+import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaGrouping;
+import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModule;
+import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaSubModule;
+import org.onosproject.yangutils.translator.tojava.utils.JavaExtendsListHolder;
+import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+
+import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.getParentNodeInGenCode;
+import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.BUILDER_CLASS_MASK;
+import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.BUILDER_INTERFACE_MASK;
+import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_ENUM_CLASS;
+import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_SERVICE_AND_MANAGER;
+import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_TYPE_CLASS;
+import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.IMPL_CLASS_MASK;
+import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.INTERFACE_MASK;
+import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.ATTRIBUTES_MASK;
+import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.EQUALS_IMPL_MASK;
+import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.FROM_STRING_IMPL_MASK;
+import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.GETTER_FOR_CLASS_MASK;
+import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.GETTER_FOR_INTERFACE_MASK;
+import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.HASH_CODE_IMPL_MASK;
+import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.SETTER_FOR_CLASS_MASK;
+import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.SETTER_FOR_INTERFACE_MASK;
+import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.TO_STRING_IMPL_MASK;
+import static org.onosproject.yangutils.translator.tojava.JavaAttributeInfo.getAttributeInfoForTheData;
+import static org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo.getQualifiedInfoOfFromString;
+import static org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo.getQualifiedTypeInfoOfCurNode;
+import static org.onosproject.yangutils.translator.tojava.utils.AttributesJavaDataType.updateJavaFileInfo;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaCodeSnippetGen.getJavaAttributeDefination;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaCodeSnippetGen.getJavaClassDefClose;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGenerator.generateBuilderClassFile;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGenerator.generateBuilderInterfaceFile;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGenerator.generateImplClassFile;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGenerator.generateInterfaceFile;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGeneratorUtils.getFileObject;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCapitalCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getPackageDirPathFromJavaJPackage;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getRootPackage;
+import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getBuildString;
+import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getDefaultConstructorString;
+import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getEqualsMethod;
+import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getFromStringMethod;
+import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getGetterForClass;
+import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getGetterString;
+import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getHashCodeMethod;
+import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getOfMethod;
+import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getOverRideString;
+import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getSetterForClass;
+import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getSetterString;
+import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getToStringMethod;
+import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.parseBuilderInterfaceBuildMethodString;
+import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.addArrayListImport;
+import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.addAugmentationHoldersImport;
+import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.addAugmentedInfoImport;
+import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.closeFile;
+import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.isAugmentationHolderExtended;
+import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.isAugmentedInfoExtended;
+import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.sortImports;
+import static org.onosproject.yangutils.utils.UtilConstants.ACTIVATE;
+import static org.onosproject.yangutils.utils.UtilConstants.BUILDER;
+import static org.onosproject.yangutils.utils.UtilConstants.COMPONENT;
+import static org.onosproject.yangutils.utils.UtilConstants.DEACTIVATE;
+import static org.onosproject.yangutils.utils.UtilConstants.EMPTY_STRING;
+import static org.onosproject.yangutils.utils.UtilConstants.FOUR_SPACE_INDENTATION;
+import static org.onosproject.yangutils.utils.UtilConstants.IMPL;
+import static org.onosproject.yangutils.utils.UtilConstants.IMPORT;
+import static org.onosproject.yangutils.utils.UtilConstants.INTERFACE;
+import static org.onosproject.yangutils.utils.UtilConstants.MANAGER;
+import static org.onosproject.yangutils.utils.UtilConstants.NEW_LINE;
+import static org.onosproject.yangutils.utils.UtilConstants.PERIOD;
+import static org.onosproject.yangutils.utils.UtilConstants.REFERENCE;
+import static org.onosproject.yangutils.utils.UtilConstants.REFERENCE_CARDINALITY;
+import static org.onosproject.yangutils.utils.UtilConstants.SEMI_COLAN;
+import static org.onosproject.yangutils.utils.UtilConstants.SERVICE;
+import static org.onosproject.yangutils.utils.UtilConstants.SLASH;
+import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.createPackage;
+import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.readAppendFile;
+import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.getJavaDoc;
+import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.GETTER_METHOD;
+import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.OF_METHOD;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getAbsolutePackagePath;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.insertDataIntoJavaFile;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.mergeJavaFiles;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.validateLineLength;
+
+/**
+ * Represents implementation of java code fragments temporary implementations.
+ * Manages the common temp file required for Java file(s) generated.
+ */
+public class TempJavaFragmentFiles {
+
+    /**
+     * Information about the java files being generated.
+     */
+    private JavaFileInfo javaFileInfo;
+
+    /**
+     * Imported class info.
+     */
+    private JavaImportData javaImportData;
+
+    /**
+     * The variable which guides the types of temporary files generated using
+     * the temporary generated file types mask.
+     */
+    private int generatedTempFiles;
+
+    /**
+     * Absolute path where the target java file needs to be generated.
+     */
+    private String absoluteDirPath;
+
+    /**
+     * Contains all the interface(s)/class name which will be extended by generated files.
+     */
+    private JavaExtendsListHolder javaExtendsListHolder;
+
+    /**
+     * File type extension for java classes.
+     */
+    private static final String JAVA_FILE_EXTENSION = ".java";
+
+    /**
+     * File type extension for temporary classes.
+     */
+    private static final String TEMP_FILE_EXTENSION = ".tmp";
+
+    /**
+     * Folder suffix for temporary files folder.
+     */
+    private static final String TEMP_FOLDER_NAME_SUFIX = "-Temp";
+
+    /**
+     * File name for getter method.
+     */
+    private static final String GETTER_METHOD_FILE_NAME = "GetterMethod";
+
+    /**
+     * File name for setter method.
+     */
+    private static final String SETTER_METHOD_FILE_NAME = "SetterMethod";
+
+    /**
+     * File name for getter method implementation.
+     */
+    private static final String GETTER_METHOD_IMPL_FILE_NAME = "GetterMethodImpl";
+
+    /**
+     * File name for setter method implementation.
+     */
+    private static final String SETTER_METHOD_IMPL_FILE_NAME = "SetterMethodImpl";
+
+    /**
+     * File name for attributes.
+     */
+    private static final String ATTRIBUTE_FILE_NAME = "Attributes";
+
+    /**
+     * File name for to string method.
+     */
+    private static final String TO_STRING_METHOD_FILE_NAME = "ToString";
+
+    /**
+     * File name for hash code method.
+     */
+    private static final String HASH_CODE_METHOD_FILE_NAME = "HashCode";
+
+    /**
+     * File name for equals method.
+     */
+    private static final String EQUALS_METHOD_FILE_NAME = "Equals";
+
+    /**
+     * File name for from string method.
+     */
+    private static final String FROM_STRING_METHOD_FILE_NAME = "FromString";
+
+    /**
+     * File name for interface java file name suffix.
+     */
+    private static final String INTERFACE_FILE_NAME_SUFFIX = EMPTY_STRING;
+
+    /**
+     * File name for builder interface file name suffix.
+     */
+    private static final String BUILDER_INTERFACE_FILE_NAME_SUFFIX = BUILDER + INTERFACE;
+
+    /**
+     * File name for builder class file name suffix.
+     */
+    private static final String BUILDER_CLASS_FILE_NAME_SUFFIX = BUILDER;
+
+    /**
+     * File name for impl class file name suffix.
+     */
+    private static final String IMPL_CLASS_FILE_NAME_SUFFIX = IMPL;
+
+    /**
+     * Java file handle for interface file.
+     */
+    private File interfaceJavaFileHandle;
+
+    /**
+     * Java file handle for builder interface file.
+     */
+    private File builderInterfaceJavaFileHandle;
+
+    /**
+     * Java file handle for builder class file.
+     */
+    private File builderClassJavaFileHandle;
+
+    /**
+     * Java file handle for impl class file.
+     */
+    private File implClassJavaFileHandle;
+
+    /**
+     * Temporary file handle for attribute.
+     */
+    private File attributesTempFileHandle;
+
+    /**
+     * Temporary file handle for getter of interface.
+     */
+    private File getterInterfaceTempFileHandle;
+
+    /**
+     * Temporary file handle for setter of interface.
+     */
+    private File setterInterfaceTempFileHandle;
+
+    /**
+     * Temporary file handle for getter of class.
+     */
+    private File getterImplTempFileHandle;
+
+    /**
+     * Temporary file handle for setter of class.
+     */
+    private File setterImplTempFileHandle;
+
+    /**
+     * Temporary file handle for hash code method of class.
+     */
+    private File hashCodeImplTempFileHandle;
+
+    /**
+     * Temporary file handle for equals method of class.
+     */
+    private File equalsImplTempFileHandle;
+
+    /**
+     * Temporary file handle for to string method of class.
+     */
+    private File toStringImplTempFileHandle;
+
+    /**
+     * Temporary file handle for from string method of class.
+     */
+    private File fromStringImplTempFileHandle;
+
+    /**
+     * Import info for case.
+     */
+    private JavaQualifiedTypeInfo caseImportInfo;
+
+    /**
+     * Is attribute added.
+     */
+    private boolean isAttributePresent;
+
+    /**
+     * Retrieves the absolute path where the file needs to be generated.
+     *
+     * @return absolute path where the file needs to be generated
+     */
+    private String getAbsoluteDirPath() {
+        return absoluteDirPath;
+    }
+
+    /**
+     * Sets absolute path where the file needs to be generated.
+     *
+     * @param absoluteDirPath absolute path where the file needs to be
+     *                        generated.
+     */
+    void setAbsoluteDirPath(String absoluteDirPath) {
+        this.absoluteDirPath = absoluteDirPath;
+    }
+
+    /**
+     * Sets the generated java file information.
+     *
+     * @param javaFileInfo generated java file information
+     */
+    public void setJavaFileInfo(JavaFileInfo javaFileInfo) {
+        this.javaFileInfo = javaFileInfo;
+    }
+
+    /**
+     * Retrieves the generated java file information.
+     *
+     * @return generated java file information
+     */
+    public JavaFileInfo getJavaFileInfo() {
+        return javaFileInfo;
+    }
+
+    /**
+     * Retrieves the generated temp files.
+     *
+     * @return generated temp files
+     */
+    int getGeneratedTempFiles() {
+        return generatedTempFiles;
+    }
+
+    /**
+     * Clears the generated file mask.
+     */
+    void clearGeneratedTempFileMask() {
+        generatedTempFiles = 0;
+    }
+
+    /**
+     * Adds to generated temporary files.
+     *
+     * @param generatedTempFile generated file
+     */
+    void addGeneratedTempFile(int generatedTempFile) {
+        generatedTempFiles |= generatedTempFile;
+        setGeneratedTempFiles(generatedTempFiles);
+    }
+
+    /**
+     * Sets generated file files.
+     *
+     * @param fileType generated file type
+     */
+    void setGeneratedTempFiles(int fileType) {
+        generatedTempFiles = fileType;
+    }
+
+    /**
+     * Retrieves the generated Java files.
+     *
+     * @return generated Java files
+     */
+    int getGeneratedJavaFiles() {
+        return getJavaFileInfo().getGeneratedFileTypes();
+    }
+
+    /**
+     * Retrieves the mapped Java class name.
+     *
+     * @return mapped Java class name
+     */
+    String getGeneratedJavaClassName() {
+        return getCapitalCase(getJavaFileInfo().getJavaName());
+    }
+
+    /**
+     * Retrieves the import data for the generated Java file.
+     *
+     * @return import data for the generated Java file
+     */
+    public JavaImportData getJavaImportData() {
+        return javaImportData;
+    }
+
+    /**
+     * Sets import data for the generated Java file.
+     *
+     * @param javaImportData import data for the generated Java file
+     */
+    void setJavaImportData(JavaImportData javaImportData) {
+        this.javaImportData = javaImportData;
+    }
+
+    /**
+     * Retrieves the status of any attributes added.
+     *
+     * @return status of any attributes added
+     */
+    public boolean isAttributePresent() {
+        return isAttributePresent;
+    }
+
+    /**
+     * Sets status of any attributes added.
+     *
+     * @param attributePresent status of any attributes added
+     */
+    public void setAttributePresent(boolean attributePresent) {
+        isAttributePresent = attributePresent;
+    }
+
+    /**
+     * Returns getter methods's temporary file handle.
+     *
+     * @return temporary file handle
+     */
+    public File getGetterInterfaceTempFileHandle() {
+        return getterInterfaceTempFileHandle;
+    }
+
+    /**
+     * Sets to getter method's temporary file handle.
+     *
+     * @param getterForInterface file handle for to getter method
+     */
+    private void setGetterInterfaceTempFileHandle(File getterForInterface) {
+        getterInterfaceTempFileHandle = getterForInterface;
+    }
+
+    /**
+     * Returns setter method's temporary file handle.
+     *
+     * @return temporary file handle
+     */
+    public File getSetterInterfaceTempFileHandle() {
+        return setterInterfaceTempFileHandle;
+    }
+
+    /**
+     * Sets to setter method's temporary file handle.
+     *
+     * @param setterForInterface file handle for to setter method
+     */
+    private void setSetterInterfaceTempFileHandle(File setterForInterface) {
+        setterInterfaceTempFileHandle = setterForInterface;
+    }
+
+    /**
+     * Returns setter method's impl's temporary file handle.
+     *
+     * @return temporary file handle
+     */
+    public File getSetterImplTempFileHandle() {
+        return setterImplTempFileHandle;
+    }
+
+    /**
+     * Sets to setter method's impl's temporary file handle.
+     *
+     * @param setterImpl file handle for to setter method's implementation class
+     */
+    private void setSetterImplTempFileHandle(File setterImpl) {
+        setterImplTempFileHandle = setterImpl;
+    }
+
+    /**
+     * Returns from string method's temporary file handle.
+     *
+     * @return from string method's temporary file handle
+     */
+    public File getFromStringImplTempFileHandle() {
+        return fromStringImplTempFileHandle;
+    }
+
+    /**
+     * Sets from string method's temporary file handle.
+     *
+     * @param fromStringImplTempFileHandle from string method's temporary file
+     *                                     handle
+     */
+    private void setFromStringImplTempFileHandle(File fromStringImplTempFileHandle) {
+        this.fromStringImplTempFileHandle = fromStringImplTempFileHandle;
+    }
+
+    /**
+     * Creates an instance of temporary java code fragment.
+     *
+     * @param javaFileInfo generated java file information
+     * @throws IOException when fails to create new file handle
+     */
+    TempJavaFragmentFiles(JavaFileInfo javaFileInfo)
+            throws IOException {
+        setJavaExtendsListHolder(new JavaExtendsListHolder());
+        setJavaImportData(new JavaImportData());
+        setJavaFileInfo(javaFileInfo);
+        setAbsoluteDirPath(getAbsolutePackagePath(getJavaFileInfo().getBaseCodeGenPath(),
+                getJavaFileInfo().getPackageFilePath()));
+
+        /*
+         * Initialize getter when generation file type matches to interface
+         * mask.
+         */
+        if ((getGeneratedJavaFiles() & INTERFACE_MASK) != 0) {
+            addGeneratedTempFile(GETTER_FOR_INTERFACE_MASK);
+        }
+
+        /*
+         * Initialize getter and setter when generation file type matches to
+         * builder interface mask.
+         */
+        if ((getGeneratedJavaFiles() & BUILDER_INTERFACE_MASK) != 0) {
+            addGeneratedTempFile(GETTER_FOR_INTERFACE_MASK);
+            addGeneratedTempFile(SETTER_FOR_INTERFACE_MASK);
+        }
+
+        /*
+         * Initialize getterImpl, setterImpl and attributes when generation file
+         * type matches to builder class mask.
+         */
+        if ((getGeneratedJavaFiles() & BUILDER_CLASS_MASK) != 0) {
+            addGeneratedTempFile(ATTRIBUTES_MASK);
+            addGeneratedTempFile(GETTER_FOR_CLASS_MASK);
+            addGeneratedTempFile(SETTER_FOR_CLASS_MASK);
+        }
+
+        /*
+         * Initialize getterImpl, attributes, constructor, hash code, equals and
+         * to strings when generation file type matches to impl class mask.
+         */
+        if ((getGeneratedJavaFiles() & IMPL_CLASS_MASK) != 0) {
+            addGeneratedTempFile(ATTRIBUTES_MASK);
+            addGeneratedTempFile(GETTER_FOR_CLASS_MASK);
+            addGeneratedTempFile(HASH_CODE_IMPL_MASK);
+            addGeneratedTempFile(EQUALS_IMPL_MASK);
+            addGeneratedTempFile(TO_STRING_IMPL_MASK);
+        }
+
+        /*
+         * Initialize temp files to generate type class.
+         */
+        if ((getGeneratedJavaFiles() & GENERATE_TYPE_CLASS) != 0) {
+            addGeneratedTempFile(ATTRIBUTES_MASK);
+            addGeneratedTempFile(GETTER_FOR_CLASS_MASK);
+            addGeneratedTempFile(HASH_CODE_IMPL_MASK);
+            addGeneratedTempFile(EQUALS_IMPL_MASK);
+            addGeneratedTempFile(TO_STRING_IMPL_MASK);
+            addGeneratedTempFile(FROM_STRING_IMPL_MASK);
+        }
+
+        /*
+         * Initialize temp files to generate enum class.
+         */
+        if ((getGeneratedJavaFiles() & GENERATE_ENUM_CLASS) != 0) {
+            addGeneratedTempFile(FROM_STRING_IMPL_MASK);
+        }
+        /*
+         * Initialize getter and setter when generation file type matches to
+         * builder interface mask.
+         */
+        if ((getGeneratedJavaFiles() & GENERATE_SERVICE_AND_MANAGER) != 0) {
+            addGeneratedTempFile(GETTER_FOR_INTERFACE_MASK);
+            addGeneratedTempFile(SETTER_FOR_INTERFACE_MASK);
+            addGeneratedTempFile(GETTER_FOR_CLASS_MASK);
+            addGeneratedTempFile(SETTER_FOR_CLASS_MASK);
+        }
+
+        /*
+         * Set temporary file handles.
+         */
+        if ((getGeneratedTempFiles() & ATTRIBUTES_MASK) != 0) {
+            setAttributesTempFileHandle(getTemporaryFileHandle(ATTRIBUTE_FILE_NAME));
+        }
+
+        if ((getGeneratedTempFiles() & GETTER_FOR_INTERFACE_MASK) != 0) {
+            setGetterInterfaceTempFileHandle(getTemporaryFileHandle(GETTER_METHOD_FILE_NAME));
+        }
+
+        if ((getGeneratedTempFiles() & SETTER_FOR_INTERFACE_MASK) != 0) {
+            setSetterInterfaceTempFileHandle(getTemporaryFileHandle(SETTER_METHOD_FILE_NAME));
+        }
+
+        if ((getGeneratedTempFiles() & GETTER_FOR_CLASS_MASK) != 0) {
+            setGetterImplTempFileHandle(getTemporaryFileHandle(GETTER_METHOD_IMPL_FILE_NAME));
+        }
+
+        if ((getGeneratedTempFiles() & SETTER_FOR_CLASS_MASK) != 0) {
+            setSetterImplTempFileHandle(getTemporaryFileHandle(SETTER_METHOD_IMPL_FILE_NAME));
+        }
+
+        if ((getGeneratedTempFiles() & HASH_CODE_IMPL_MASK) != 0) {
+            setHashCodeImplTempFileHandle(getTemporaryFileHandle(HASH_CODE_METHOD_FILE_NAME));
+        }
+        if ((getGeneratedTempFiles() & EQUALS_IMPL_MASK) != 0) {
+            setEqualsImplTempFileHandle(getTemporaryFileHandle(EQUALS_METHOD_FILE_NAME));
+        }
+        if ((getGeneratedTempFiles() & TO_STRING_IMPL_MASK) != 0) {
+            setToStringImplTempFileHandle(getTemporaryFileHandle(TO_STRING_METHOD_FILE_NAME));
+        }
+        if ((getGeneratedTempFiles() & FROM_STRING_IMPL_MASK) != 0) {
+            setFromStringImplTempFileHandle(getTemporaryFileHandle(FROM_STRING_METHOD_FILE_NAME));
+        }
+
+    }
+
+    /**
+     * Returns java file handle for interface file.
+     *
+     * @return java file handle for interface file
+     */
+    private File getInterfaceJavaFileHandle() {
+        return interfaceJavaFileHandle;
+    }
+
+    /**
+     * Sets the java file handle for interface file.
+     *
+     * @param interfaceJavaFileHandle java file handle
+     */
+    private void setInterfaceJavaFileHandle(File interfaceJavaFileHandle) {
+        this.interfaceJavaFileHandle = interfaceJavaFileHandle;
+    }
+
+    /**
+     * Returns java file handle for builder interface file.
+     *
+     * @return java file handle for builder interface file
+     */
+    private File getBuilderInterfaceJavaFileHandle() {
+        return builderInterfaceJavaFileHandle;
+    }
+
+    /**
+     * Sets the java file handle for builder interface file.
+     *
+     * @param builderInterfaceJavaFileHandle java file handle
+     */
+    private void setBuilderInterfaceJavaFileHandle(File builderInterfaceJavaFileHandle) {
+        this.builderInterfaceJavaFileHandle = builderInterfaceJavaFileHandle;
+    }
+
+    /**
+     * Returns java file handle for builder class file.
+     *
+     * @return java file handle for builder class file
+     */
+    private File getBuilderClassJavaFileHandle() {
+        return builderClassJavaFileHandle;
+    }
+
+    /**
+     * Sets the java file handle for builder class file.
+     *
+     * @param builderClassJavaFileHandle java file handle
+     */
+    private void setBuilderClassJavaFileHandle(File builderClassJavaFileHandle) {
+        this.builderClassJavaFileHandle = builderClassJavaFileHandle;
+    }
+
+    /**
+     * Returns java file handle for impl class file.
+     *
+     * @return java file handle for impl class file
+     */
+    private File getImplClassJavaFileHandle() {
+        return implClassJavaFileHandle;
+    }
+
+    /**
+     * Sets the java file handle for impl class file.
+     *
+     * @param implClassJavaFileHandle java file handle
+     */
+    private void setImplClassJavaFileHandle(File implClassJavaFileHandle) {
+        this.implClassJavaFileHandle = implClassJavaFileHandle;
+    }
+
+    /**
+     * Returns attribute's temporary file handle.
+     *
+     * @return temporary file handle
+     */
+    public File getAttributesTempFileHandle() {
+        return attributesTempFileHandle;
+    }
+
+    /**
+     * Sets attribute's temporary file handle.
+     *
+     * @param attributeForClass file handle for attribute
+     */
+    void setAttributesTempFileHandle(File attributeForClass) {
+        attributesTempFileHandle = attributeForClass;
+    }
+
+    /**
+     * Returns getter method's impl's temporary file handle.
+     *
+     * @return temporary file handle
+     */
+    public File getGetterImplTempFileHandle() {
+        return getterImplTempFileHandle;
+    }
+
+    /**
+     * Sets to getter method's impl's temporary file handle.
+     *
+     * @param getterImpl file handle for to getter method's impl
+     */
+    void setGetterImplTempFileHandle(File getterImpl) {
+        getterImplTempFileHandle = getterImpl;
+    }
+
+    /**
+     * Returns hash code method's temporary file handle.
+     *
+     * @return temporary file handle
+     */
+    public File getHashCodeImplTempFileHandle() {
+        return hashCodeImplTempFileHandle;
+    }
+
+    /**
+     * Sets hash code method's temporary file handle.
+     *
+     * @param hashCodeMethod file handle for hash code method
+     */
+    void setHashCodeImplTempFileHandle(File hashCodeMethod) {
+        hashCodeImplTempFileHandle = hashCodeMethod;
+    }
+
+    /**
+     * Returns equals mehtod's temporary file handle.
+     *
+     * @return temporary file handle
+     */
+    public File getEqualsImplTempFileHandle() {
+        return equalsImplTempFileHandle;
+    }
+
+    /**
+     * Sets equals method's temporary file handle.
+     *
+     * @param equalsMethod file handle for to equals method
+     */
+    void setEqualsImplTempFileHandle(File equalsMethod) {
+        equalsImplTempFileHandle = equalsMethod;
+    }
+
+    /**
+     * Returns to string method's temporary file handle.
+     *
+     * @return temporary file handle
+     */
+    public File getToStringImplTempFileHandle() {
+        return toStringImplTempFileHandle;
+    }
+
+    /**
+     * Sets to string method's temporary file handle.
+     *
+     * @param toStringMethod file handle for to string method
+     */
+    void setToStringImplTempFileHandle(File toStringMethod) {
+        toStringImplTempFileHandle = toStringMethod;
+    }
+
+    /**
+     * Returns java extends list holder.
+     *
+     * @return java extends list holder
+     */
+    public JavaExtendsListHolder getJavaExtendsListHolder() {
+        return javaExtendsListHolder;
+    }
+
+    /**
+     * Sets java extends list holder.
+     *
+     * @param javaExtendsListHolder java extends list holder
+     */
+    public void setJavaExtendsListHolder(JavaExtendsListHolder javaExtendsListHolder) {
+        this.javaExtendsListHolder = javaExtendsListHolder;
+    }
+
+    /**
+     * Adds attribute for class.
+     *
+     * @param attr             attribute info
+     * @param yangPluginConfig plugin configurations
+     * @throws IOException when fails to append to temporary file
+     */
+    private void addAttribute(JavaAttributeInfo attr, YangPluginConfig yangPluginConfig)
+            throws IOException {
+        appendToFile(getAttributesTempFileHandle(), parseAttribute(attr, yangPluginConfig)
+                + FOUR_SPACE_INDENTATION);
+    }
+
+    /**
+     * Adds getter for interface.
+     *
+     * @param attr         attribute info
+     * @param pluginConfig plugin configurations
+     * @throws IOException when fails to append to temporary file
+     */
+    private void addGetterForInterface(JavaAttributeInfo attr, YangPluginConfig pluginConfig)
+            throws IOException {
+        appendToFile(getGetterInterfaceTempFileHandle(),
+                getGetterString(attr, getGeneratedJavaFiles(), pluginConfig) + NEW_LINE);
+    }
+
+    /**
+     * Adds setter for interface.
+     *
+     * @param attr         attribute info
+     * @param pluginConfig plugin configurations
+     * @throws IOException when fails to append to temporary file
+     */
+    private void addSetterForInterface(JavaAttributeInfo attr, YangPluginConfig pluginConfig)
+            throws IOException {
+        appendToFile(getSetterInterfaceTempFileHandle(),
+                getSetterString(attr, getGeneratedJavaClassName(), getGeneratedJavaFiles(), pluginConfig)
+                        + NEW_LINE);
+    }
+
+    /**
+     * Adds setter's implementation for class.
+     *
+     * @param attr attribute info
+     * @throws IOException when fails to append to temporary file
+     */
+    private void addSetterImpl(JavaAttributeInfo attr)
+            throws IOException {
+        appendToFile(getSetterImplTempFileHandle(),
+                getOverRideString() + getSetterForClass(attr, getGeneratedJavaClassName(), getGeneratedJavaFiles())
+                        +
+                        NEW_LINE);
+    }
+
+    /**
+     * Adds getter method's impl for class.
+     *
+     * @param attr         attribute info
+     * @param pluginConfig plugin configurations
+     * @throws IOException when fails to append to temporary file
+     */
+    private void addGetterImpl(JavaAttributeInfo attr, YangPluginConfig pluginConfig)
+            throws IOException {
+        if ((getGeneratedJavaFiles() & BUILDER_CLASS_MASK) != 0
+                || (getGeneratedJavaFiles() & GENERATE_SERVICE_AND_MANAGER) != 0) {
+            appendToFile(getGetterImplTempFileHandle(), getOverRideString() + getGetterForClass(attr,
+                    getGeneratedJavaFiles()) + NEW_LINE);
+        } else {
+            appendToFile(getGetterImplTempFileHandle(),
+                    getJavaDoc(GETTER_METHOD, getCapitalCase(attr.getAttributeName()), false, pluginConfig)
+                            + getGetterForClass(attr, getGeneratedJavaFiles()) + NEW_LINE);
+        }
+    }
+
+    /**
+     * Adds build method for interface.
+     *
+     * @param pluginConfig plugin configurations
+     * @return build method for interface
+     * @throws IOException when fails to append to temporary file
+     */
+    String addBuildMethodForInterface(YangPluginConfig pluginConfig)
+            throws IOException {
+        return parseBuilderInterfaceBuildMethodString(getGeneratedJavaClassName(), pluginConfig);
+    }
+
+    /**
+     * Adds build method's implementation for class.
+     *
+     * @return build method implementation for class
+     * @throws IOException when fails to append to temporary file
+     */
+    String addBuildMethodImpl()
+            throws IOException {
+        return getBuildString(getGeneratedJavaClassName()) + NEW_LINE;
+    }
+
+    /**
+     * Adds default constructor for class.
+     *
+     * @param modifier     modifier for constructor.
+     * @param toAppend     string which need to be appended with the class name
+     * @param pluginConfig plugin configurations
+     * @return default constructor for class
+     * @throws IOException when fails to append to file
+     */
+    String addDefaultConstructor(String modifier, String toAppend, YangPluginConfig pluginConfig)
+            throws IOException {
+        return NEW_LINE
+                + getDefaultConstructorString(getGeneratedJavaClassName() + toAppend, modifier, pluginConfig);
+    }
+
+    /**
+     * Adds default constructor for class.
+     *
+     * @param pluginCnfig plugin configurations
+     * @return default constructor for class
+     * @throws IOException when fails to append to file
+     */
+    public String addOfMethod(YangPluginConfig pluginCnfig)
+            throws IOException {
+        return getJavaDoc(OF_METHOD, getGeneratedJavaClassName(), false, pluginCnfig)
+                + getOfMethod(getGeneratedJavaClassName(), null);
+    }
+
+    /**
+     * Adds hash code method for class.
+     *
+     * @param attr attribute info
+     * @throws IOException when fails to append to temporary file
+     */
+    private void addHashCodeMethod(JavaAttributeInfo attr)
+            throws IOException {
+        appendToFile(getHashCodeImplTempFileHandle(), getHashCodeMethod(attr) + NEW_LINE);
+    }
+
+    /**
+     * Adds equals method for class.
+     *
+     * @param attr attribute info
+     * @throws IOException when fails to append to temporary file
+     */
+    private void addEqualsMethod(JavaAttributeInfo attr)
+            throws IOException {
+        appendToFile(getEqualsImplTempFileHandle(), getEqualsMethod(attr) + NEW_LINE);
+    }
+
+    /**
+     * Adds ToString method for class.
+     *
+     * @param attr attribute info
+     * @throws IOException when fails to append to temporary file
+     */
+    private void addToStringMethod(JavaAttributeInfo attr)
+            throws IOException {
+        appendToFile(getToStringImplTempFileHandle(), getToStringMethod(attr) + NEW_LINE);
+    }
+
+    /**
+     * Adds from string method for union class.
+     *
+     * @param javaAttributeInfo       type attribute info
+     * @param fromStringAttributeInfo from string attribute info
+     * @throws IOException when fails to append to temporary file
+     */
+    private void addFromStringMethod(JavaAttributeInfo javaAttributeInfo,
+            JavaAttributeInfo fromStringAttributeInfo)
+            throws IOException {
+        appendToFile(getFromStringImplTempFileHandle(), getFromStringMethod(javaAttributeInfo,
+                fromStringAttributeInfo) + NEW_LINE);
+    }
+
+    /**
+     * Returns a temporary file handle for the specific file type.
+     *
+     * @param fileName file name
+     * @return temporary file handle
+     * @throws IOException when fails to create new file handle
+     */
+    File getTemporaryFileHandle(String fileName)
+            throws IOException {
+        String path = getTempDirPath();
+        File dir = new File(path);
+        if (!dir.exists()) {
+            dir.mkdirs();
+        }
+        File file = new File(path + fileName + TEMP_FILE_EXTENSION);
+        if (!file.exists()) {
+            file.createNewFile();
+        } else {
+            throw new IOException(fileName + " is reused due to YANG naming");
+        }
+        return file;
+    }
+
+    /**
+     * Returns a temporary file handle for the specific file type.
+     *
+     * @param fileName file name
+     * @return temporary file handle
+     * @throws IOException when fails to create new file handle
+     */
+    File getJavaFileHandle(String fileName)
+            throws IOException {
+        return getFileObject(getDirPath(), fileName, JAVA_FILE_EXTENSION, getJavaFileInfo());
+    }
+
+    /**
+     * Returns data from the temporary files.
+     *
+     * @param file temporary file handle
+     * @return stored data from temporary files
+     * @throws IOException when failed to get data from the given file
+     */
+    public String getTemporaryDataFromFileHandle(File file)
+            throws IOException {
+
+        String path = getTempDirPath();
+        if (new File(path + file.getName()).exists()) {
+            return readAppendFile(path + file.getName(), EMPTY_STRING);
+        } else {
+            throw new IOException("Unable to get data from the given "
+                    + file.getName() + " file for " + getGeneratedJavaClassName() + PERIOD);
+        }
+    }
+
+    /**
+     * Returns temporary directory path.
+     *
+     * @return directory path
+     */
+    String getTempDirPath() {
+        return getPackageDirPathFromJavaJPackage(getAbsoluteDirPath()) + SLASH + getGeneratedJavaClassName()
+                + TEMP_FOLDER_NAME_SUFIX + SLASH;
+    }
+
+    /**
+     * Parses attribute to get the attribute string.
+     *
+     * @param attr         attribute info
+     * @param pluginConfig plugin configurations
+     * @return attribute string
+     */
+    public String parseAttribute(JavaAttributeInfo attr, YangPluginConfig pluginConfig) {
+        /*
+         * TODO: check if this utility needs to be called or move to the caller
+         */
+        String attributeName = getCamelCase(attr.getAttributeName(), pluginConfig.getConflictResolver());
+        if (attr.isQualifiedName()) {
+            return getJavaAttributeDefination(attr.getImportInfo().getPkgInfo(),
+                    attr.getImportInfo().getClassInfo(),
+                    attributeName, attr.isListAttr());
+        } else {
+            return getJavaAttributeDefination(null, attr.getImportInfo().getClassInfo(), attributeName,
+                    attr.isListAttr());
+        }
+    }
+
+    /**
+     * Appends content to temporary file.
+     *
+     * @param file temporary file
+     * @param data data to be appended
+     * @throws IOException when fails to append to file
+     */
+    void appendToFile(File file, String data)
+            throws IOException {
+        try {
+            insertDataIntoJavaFile(file, data);
+        } catch (IOException ex) {
+            throw new IOException("failed to write in temp file.");
+        }
+    }
+
+    /**
+     * Adds current node info as and attribute to the parent generated file.
+     *
+     * @param curNode      current node which needs to be added as an attribute in
+     *                     the parent generated code
+     * @param isList       is list construct
+     * @param pluginConfig plugin configurations
+     * @throws IOException IO operation exception
+     */
+    public static void addCurNodeInfoInParentTempFile(YangNode curNode,
+            boolean isList, YangPluginConfig pluginConfig)
+            throws IOException {
+        YangNode parent = getParentNodeInGenCode(curNode);
+        if (!(parent instanceof JavaCodeGenerator)) {
+            throw new TranslatorException("missing parent node to contain current node info in generated file");
+        }
+
+        if (parent instanceof YangJavaGrouping) {
+            /*
+             * In case of grouping, there is no need to add the information, it
+             * will be taken care in uses
+             */
+            return;
+        }
+
+        JavaAttributeInfo javaAttributeInfo = getCurNodeAsAttributeInTarget(curNode,
+                parent, isList);
+        if (!(parent instanceof TempJavaCodeFragmentFilesContainer)) {
+            throw new TranslatorException("missing parent temp file handle");
+        }
+        getNodesInterfaceFragmentFiles(parent)
+                .addJavaSnippetInfoToApplicableTempFiles(javaAttributeInfo, pluginConfig);
+    }
+
+    /**
+     * Adds current node info as and attribute to the parent generated file.
+     *
+     * @param curNode      current node which needs to be added as an attribute in
+     *                     the parent generated code
+     * @param pluginConfig plugin configurations
+     * @param targetNode   target node to add the attribute
+     * @throws IOException IO operation exception
+     */
+    public static void addCurNodeAsAttributeInTargetTempFile(YangNode curNode,
+            YangPluginConfig pluginConfig, YangNode targetNode)
+            throws IOException {
+
+        if (!(targetNode instanceof JavaCodeGenerator)) {
+            throw new TranslatorException("invalid target node to generated file");
+        }
+
+        if (targetNode instanceof YangJavaGrouping) {
+            /*
+             * In case of grouping, there is no need to add the information, it
+             * will be taken care in uses
+             */
+            return;
+        }
+
+        boolean isList = curNode instanceof YangList;
+
+        JavaAttributeInfo javaAttributeInfo = getCurNodeAsAttributeInTarget(curNode,
+                targetNode, isList);
+        if (!(targetNode instanceof TempJavaCodeFragmentFilesContainer)) {
+            throw new TranslatorException("missing target node's temp file handle");
+        }
+        getNodesInterfaceFragmentFiles(targetNode)
+                .addJavaSnippetInfoToApplicableTempFiles(javaAttributeInfo, pluginConfig);
+    }
+
+    /**
+     * Creates an attribute info object corresponding to a data model node and
+     * return it.
+     *
+     * @param curNode    current data model node for which the java code generation
+     *                   is being handled
+     * @param targetNode target node in which the current node is an attribute
+     * @param isListNode is the current added attribute needs to be a list
+     * @return AttributeInfo attribute details required to add in temporary
+     * files
+     */
+    public static JavaAttributeInfo getCurNodeAsAttributeInTarget(YangNode curNode,
+            YangNode targetNode, boolean isListNode) {
+        String curNodeName = ((JavaFileInfoContainer) curNode).getJavaFileInfo().getJavaName();
+        if (curNodeName == null) {
+            updateJavaFileInfo(curNode, null);
+            curNodeName = ((JavaFileInfoContainer) curNode).getJavaFileInfo().getJavaName();
+        }
+
+        /*
+         * Get the import info corresponding to the attribute for import in
+         * generated java files or qualified access
+         */
+        JavaQualifiedTypeInfo qualifiedTypeInfo = getQualifiedTypeInfoOfCurNode(curNode,
+                getCapitalCase(curNodeName));
+        if (!(targetNode instanceof TempJavaCodeFragmentFilesContainer)) {
+            throw new TranslatorException("Parent node does not have file info");
+        }
+        TempJavaFragmentFiles tempJavaFragmentFiles = getNodesInterfaceFragmentFiles(targetNode);
+        JavaImportData parentImportData = tempJavaFragmentFiles.getJavaImportData();
+        JavaFileInfo fileInfo = ((JavaFileInfoContainer) targetNode).getJavaFileInfo();
+
+        boolean isQualified;
+        if ((targetNode instanceof YangJavaModule || targetNode instanceof YangJavaSubModule)
+                && (qualifiedTypeInfo.getClassInfo().contentEquals(SERVICE)
+                        || qualifiedTypeInfo.getClassInfo().contentEquals(COMPONENT)
+                        || qualifiedTypeInfo.getClassInfo().contentEquals(getCapitalCase(ACTIVATE))
+                        || qualifiedTypeInfo.getClassInfo().contentEquals(getCapitalCase(DEACTIVATE))
+                        || qualifiedTypeInfo.getClassInfo().contentEquals(REFERENCE_CARDINALITY)
+                        || qualifiedTypeInfo.getClassInfo().contentEquals(REFERENCE))
+                || qualifiedTypeInfo.getClassInfo().contentEquals(getCapitalCase(fileInfo.getJavaName() + SERVICE))
+                || qualifiedTypeInfo.getClassInfo().contentEquals(getCapitalCase(fileInfo.getJavaName() + MANAGER))) {
+
+            isQualified = true;
+        } else {
+            String className;
+            if (targetNode instanceof YangJavaModule || targetNode instanceof YangJavaSubModule) {
+                className = getCapitalCase(fileInfo.getJavaName()) + "Service";
+            } else {
+                className = getCapitalCase(fileInfo.getJavaName());
+            }
+
+            isQualified = parentImportData.addImportInfo(qualifiedTypeInfo,
+                    className, fileInfo.getPackage());
+        }
+
+        if (isListNode) {
+            parentImportData.setIfListImported(true);
+        }
+
+        return getAttributeInfoForTheData(qualifiedTypeInfo, curNodeName, null, isQualified, isListNode);
+    }
+
+    /**
+     * Resolves groupings java qualified info.
+     *
+     * @param curNode      grouping node
+     * @param pluginConfig plugin configurations
+     * @return groupings java qualified info
+     */
+    public static JavaQualifiedTypeInfo resolveGroupingsQuailifiedInfo(YangNode curNode,
+            YangPluginConfig pluginConfig) {
+
+        JavaFileInfo groupingFileInfo = ((JavaFileInfoContainer) curNode).getJavaFileInfo();
+        JavaQualifiedTypeInfo qualifiedTypeInfo = new JavaQualifiedTypeInfo();
+        if (groupingFileInfo.getPackage() == null) {
+            List<String> parentNames = new ArrayList<>();
+
+            YangNode tempNode = curNode.getParent();
+            YangNode groupingSuperParent = null;
+            while (tempNode != null) {
+                parentNames.add(tempNode.getName());
+                groupingSuperParent = tempNode;
+                tempNode = tempNode.getParent();
+            }
+
+            String pkg = null;
+            JavaFileInfo parentInfo = ((JavaFileInfoContainer) groupingSuperParent).getJavaFileInfo();
+            if (parentInfo.getPackage() == null) {
+                if (groupingSuperParent instanceof YangJavaModule) {
+                    YangJavaModule module = (YangJavaModule) groupingSuperParent;
+                    String modulePkg = getRootPackage(module.getVersion(), module.getNameSpace().getUri(), module
+                            .getRevision().getRevDate(), pluginConfig.getConflictResolver());
+                    pkg = modulePkg;
+                } else if (groupingSuperParent instanceof YangJavaSubModule) {
+                    YangJavaSubModule submodule = (YangJavaSubModule) groupingSuperParent;
+                    String subModulePkg = getRootPackage(submodule.getVersion(),
+                            submodule.getNameSpaceFromModule(submodule.getBelongsTo()),
+                            submodule.getRevision().getRevDate(), pluginConfig.getConflictResolver());
+                    pkg = subModulePkg;
+                }
+            } else {
+                pkg = parentInfo.getPackage();
+            }
+            for (String name : parentNames) {
+                pkg = pkg + PERIOD + getCamelCase(name, pluginConfig.getConflictResolver());
+            }
+
+            qualifiedTypeInfo.setPkgInfo(pkg.toLowerCase());
+            qualifiedTypeInfo.setClassInfo(
+                    getCapitalCase(getCamelCase(curNode.getName(), pluginConfig.getConflictResolver())));
+            return qualifiedTypeInfo;
+
+        } else {
+            qualifiedTypeInfo.setPkgInfo(groupingFileInfo.getPackage().toLowerCase());
+            qualifiedTypeInfo.setClassInfo(getCapitalCase(groupingFileInfo.getJavaName()));
+            return qualifiedTypeInfo;
+        }
+    }
+
+    /**
+     * Returns interface fragment files for node.
+     *
+     * @param node YANG node
+     * @return interface fragment files for node
+     */
+    public static TempJavaFragmentFiles getNodesInterfaceFragmentFiles(YangNode node) {
+        TempJavaFragmentFiles tempJavaFragmentFiles;
+        if (node instanceof RpcNotificationContainer) {
+            tempJavaFragmentFiles = ((TempJavaCodeFragmentFilesContainer) node)
+                    .getTempJavaCodeFragmentFiles()
+                    .getServiceTempFiles();
+        } else {
+            tempJavaFragmentFiles = ((TempJavaCodeFragmentFilesContainer) node)
+                    .getTempJavaCodeFragmentFiles()
+                    .getBeanTempFiles();
+        }
+        return tempJavaFragmentFiles;
+    }
+
+    /**
+     * Adds parent's info to current node import list.
+     *
+     * @param curNode      current node for which import list needs to be updated
+     * @param pluginConfig plugin configurations
+     */
+    public void addParentInfoInCurNodeTempFile(YangNode curNode, YangPluginConfig pluginConfig) {
+        caseImportInfo = new JavaQualifiedTypeInfo();
+        YangNode parent = getParentNodeInGenCode(curNode);
+        if (!(parent instanceof JavaCodeGenerator)) {
+            throw new TranslatorException("missing parent node to contain current node info in generated file");
+        }
+        if (!(curNode instanceof JavaFileInfoContainer)) {
+            throw new TranslatorException("missing java file information to get the package details "
+                    + "of attribute corresponding to child node");
+        }
+        caseImportInfo.setClassInfo(getCapitalCase(getCamelCase(parent.getName(),
+                pluginConfig.getConflictResolver())));
+        caseImportInfo.setPkgInfo(((JavaFileInfoContainer) parent).getJavaFileInfo().getPackage());
+
+        JavaFileInfo fileInfo = ((JavaFileInfoContainer) curNode).getJavaFileInfo();
+
+        ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
+                .getBeanTempFiles().getJavaImportData().addImportInfo(caseImportInfo,
+                        getCapitalCase(fileInfo.getJavaName()), fileInfo.getPackage());
+    }
+
+    /**
+     * Adds leaf attributes in generated files.
+     *
+     * @param listOfLeaves     list of YANG leaf
+     * @param yangPluginConfig plugin config
+     * @throws IOException IO operation fail
+     */
+    public void addLeavesInfoToTempFiles(List<YangLeaf> listOfLeaves,
+            YangPluginConfig yangPluginConfig)
+            throws IOException {
+        if (listOfLeaves != null) {
+            for (YangLeaf leaf : listOfLeaves) {
+                if (!(leaf instanceof JavaLeafInfoContainer)) {
+                    throw new TranslatorException("Leaf does not have java information");
+                }
+                JavaLeafInfoContainer javaLeaf = (JavaLeafInfoContainer) leaf;
+                javaLeaf.setConflictResolveConfig(yangPluginConfig.getConflictResolver());
+                javaLeaf.updateJavaQualifiedInfo();
+                JavaAttributeInfo javaAttributeInfo = getAttributeInfoForTheData(
+                        javaLeaf.getJavaQualifiedInfo(),
+                        javaLeaf.getJavaName(yangPluginConfig.getConflictResolver()),
+                        javaLeaf.getDataType(),
+                        getIsQualifiedAccessOrAddToImportList(javaLeaf.getJavaQualifiedInfo()),
+                        false);
+                addJavaSnippetInfoToApplicableTempFiles(javaAttributeInfo, yangPluginConfig);
+            }
+        }
+    }
+
+    /**
+     * Adds leaf list's attributes in generated files.
+     *
+     * @param listOfLeafList   list of YANG leaves
+     * @param yangPluginConfig plugin config
+     * @throws IOException IO operation fail
+     */
+    public void addLeafListInfoToTempFiles(List<YangLeafList> listOfLeafList, YangPluginConfig yangPluginConfig)
+            throws IOException {
+        if (listOfLeafList != null) {
+            for (YangLeafList leafList : listOfLeafList) {
+                if (!(leafList instanceof JavaLeafInfoContainer)) {
+                    throw new TranslatorException("Leaf-list does not have java information");
+                }
+                JavaLeafInfoContainer javaLeaf = (JavaLeafInfoContainer) leafList;
+                javaLeaf.setConflictResolveConfig(yangPluginConfig.getConflictResolver());
+                javaLeaf.updateJavaQualifiedInfo();
+                getJavaImportData().setIfListImported(true);
+                JavaAttributeInfo javaAttributeInfo = getAttributeInfoForTheData(
+                        javaLeaf.getJavaQualifiedInfo(),
+                        javaLeaf.getJavaName(yangPluginConfig.getConflictResolver()),
+                        javaLeaf.getDataType(),
+                        getIsQualifiedAccessOrAddToImportList(javaLeaf.getJavaQualifiedInfo()),
+                        true);
+                addJavaSnippetInfoToApplicableTempFiles(javaAttributeInfo, yangPluginConfig);
+            }
+        }
+    }
+
+    /**
+     * Adds all the leaves in the current data model node as part of the
+     * generated temporary file.
+     *
+     * @param curNode          java file info of the generated file
+     * @param yangPluginConfig plugin config
+     * @throws IOException IO operation fail
+     */
+    public void addCurNodeLeavesInfoToTempFiles(YangNode curNode,
+            YangPluginConfig yangPluginConfig)
+            throws IOException {
+        if (!(curNode instanceof YangLeavesHolder)) {
+            throw new TranslatorException("Data model node does not have any leaves");
+        }
+        YangLeavesHolder leavesHolder = (YangLeavesHolder) curNode;
+        addLeavesInfoToTempFiles(leavesHolder.getListOfLeaf(), yangPluginConfig);
+        addLeafListInfoToTempFiles(leavesHolder.getListOfLeafList(), yangPluginConfig);
+    }
+
+    /**
+     * Adds the new attribute info to the target generated temporary files.
+     *
+     * @param newAttrInfo  the attribute info that needs to be added to temporary
+     *                     files
+     * @param pluginConfig plugin configurations
+     * @throws IOException IO operation fail
+     */
+    void addJavaSnippetInfoToApplicableTempFiles(JavaAttributeInfo newAttrInfo, YangPluginConfig pluginConfig)
+            throws IOException {
+        setAttributePresent(true);
+        if ((getGeneratedTempFiles() & ATTRIBUTES_MASK) != 0) {
+            addAttribute(newAttrInfo, pluginConfig);
+        }
+
+        if ((getGeneratedTempFiles() & GETTER_FOR_INTERFACE_MASK) != 0) {
+            addGetterForInterface(newAttrInfo, pluginConfig);
+        }
+
+        if ((getGeneratedTempFiles() & SETTER_FOR_INTERFACE_MASK) != 0) {
+            addSetterForInterface(newAttrInfo, pluginConfig);
+        }
+
+        if ((getGeneratedTempFiles() & SETTER_FOR_CLASS_MASK) != 0) {
+            addSetterImpl(newAttrInfo);
+        }
+
+        if ((getGeneratedTempFiles() & GETTER_FOR_CLASS_MASK) != 0) {
+            addGetterImpl(newAttrInfo, pluginConfig);
+        }
+        if ((getGeneratedTempFiles() & HASH_CODE_IMPL_MASK) != 0) {
+            addHashCodeMethod(newAttrInfo);
+        }
+        if ((getGeneratedTempFiles() & EQUALS_IMPL_MASK) != 0) {
+            addEqualsMethod(newAttrInfo);
+        }
+        if ((getGeneratedTempFiles() & TO_STRING_IMPL_MASK) != 0) {
+            addToStringMethod(newAttrInfo);
+        }
+
+        if ((getGeneratedTempFiles() & FROM_STRING_IMPL_MASK) != 0) {
+            JavaQualifiedTypeInfo qualifiedInfoOfFromString = getQualifiedInfoOfFromString(newAttrInfo,
+                    pluginConfig.getConflictResolver());
+            /*
+             * Create a new java attribute info with qualified information of
+             * wrapper classes.
+             */
+            JavaAttributeInfo fromStringAttributeInfo = getAttributeInfoForTheData(qualifiedInfoOfFromString,
+                    newAttrInfo.getAttributeName(),
+                    newAttrInfo.getAttributeType(),
+                    getIsQualifiedAccessOrAddToImportList(qualifiedInfoOfFromString), false);
+
+            addFromStringMethod(newAttrInfo, fromStringAttributeInfo);
+        }
+    }
+
+    /**
+     * Returns java class name.
+     *
+     * @param suffix for the class name based on the file type
+     * @return java class name
+     */
+    String getJavaClassName(String suffix) {
+        return getCapitalCase(getJavaFileInfo().getJavaName()) + suffix;
+    }
+
+    /**
+     * Returns the directory path.
+     *
+     * @return directory path
+     */
+    private String getDirPath() {
+        return getJavaFileInfo().getPackageFilePath();
+    }
+
+    /**
+     * Constructs java code exit.
+     *
+     * @param fileType generated file type
+     * @param curNode  current YANG node
+     * @throws IOException when fails to generate java files
+     */
+    public void generateJavaFile(int fileType, YangNode curNode)
+            throws IOException {
+        List<String> imports = new ArrayList<>();
+        imports = getJavaImportData().getImports();
+
+        createPackage(curNode);
+
+        /*
+         * Generate java code.
+         */
+        if ((fileType & INTERFACE_MASK) != 0 || (fileType &
+                BUILDER_INTERFACE_MASK) != 0) {
+
+            /*
+             * Create interface file.
+             */
+            setInterfaceJavaFileHandle(getJavaFileHandle(getJavaClassName(INTERFACE_FILE_NAME_SUFFIX)));
+            setInterfaceJavaFileHandle(
+                    generateInterfaceFile(getInterfaceJavaFileHandle(), imports, curNode, isAttributePresent()));
+            /*
+             * Create builder interface file.
+             */
+            if ((fileType & BUILDER_INTERFACE_MASK) != 0) {
+                setBuilderInterfaceJavaFileHandle(
+                        getJavaFileHandle(getJavaClassName(BUILDER_INTERFACE_FILE_NAME_SUFFIX)));
+                setBuilderInterfaceJavaFileHandle(
+                        generateBuilderInterfaceFile(getBuilderInterfaceJavaFileHandle(), curNode,
+                                isAttributePresent()));
+                /*
+                 * Append builder interface file to interface file and close it.
+                 */
+                mergeJavaFiles(getBuilderInterfaceJavaFileHandle(), getInterfaceJavaFileHandle());
+                validateLineLength(getInterfaceJavaFileHandle());
+            }
+            insertDataIntoJavaFile(getInterfaceJavaFileHandle(), getJavaClassDefClose());
+            if (isAugmentationHolderExtended(getJavaExtendsListHolder().getExtendsList())) {
+                addAugmentationHoldersImport(curNode, imports, false);
+            }
+            if (isAugmentedInfoExtended(getJavaExtendsListHolder().getExtendsList())) {
+                addAugmentedInfoImport(curNode, imports, false);
+            }
+            if (curNode instanceof YangCase) {
+                removeCaseImport(imports);
+            }
+        }
+        if ((fileType & BUILDER_CLASS_MASK) != 0 || (fileType & IMPL_CLASS_MASK) != 0) {
+            if (isAttributePresent()) {
+                addImportsToStringAndHasCodeMethods(curNode, imports);
+            }
+            if (isAugmentationHolderExtended(getJavaExtendsListHolder().getExtendsList())) {
+                addAugmentedInfoImport(curNode, imports, true);
+                addArrayListImport(curNode, imports, true);
+            }
+            sortImports(imports);
+            /*
+             * Create builder class file.
+             */
+            setBuilderClassJavaFileHandle(getJavaFileHandle(getJavaClassName(BUILDER_CLASS_FILE_NAME_SUFFIX)));
+            setBuilderClassJavaFileHandle(
+                    generateBuilderClassFile(getBuilderClassJavaFileHandle(), imports, curNode,
+                            isAttributePresent()));
+            /*
+             * Create impl class file.
+             */
+            if ((fileType & IMPL_CLASS_MASK) != 0) {
+                setImplClassJavaFileHandle(getJavaFileHandle(getJavaClassName(IMPL_CLASS_FILE_NAME_SUFFIX)));
+                setImplClassJavaFileHandle(
+                        generateImplClassFile(getImplClassJavaFileHandle(), curNode, isAttributePresent()));
+                /*
+                 * Append impl class to builder class and close it.
+                 */
+                mergeJavaFiles(getImplClassJavaFileHandle(), getBuilderClassJavaFileHandle());
+                validateLineLength(getBuilderClassJavaFileHandle());
+            }
+            insertDataIntoJavaFile(getBuilderClassJavaFileHandle(), getJavaClassDefClose());
+            if (isAugmentationHolderExtended(getJavaExtendsListHolder().getExtendsList())) {
+                addAugmentedInfoImport(curNode, imports, false);
+                addArrayListImport(curNode, imports, false);
+            }
+        }
+        /*
+         * Close all the file handles.
+         */
+        freeTemporaryResources(false);
+    }
+
+    /**
+     * Adds imports for ToString and HashCodeMethod.
+     *
+     * @param curNode current YANG node
+     * @param imports import list
+     * @return import list
+     */
+    public List<String> addImportsToStringAndHasCodeMethods(YangNode curNode, List<String> imports) {
+        imports.add(getJavaImportData().getImportForHashAndEquals());
+        imports.add(getJavaImportData().getImportForToString());
+        return imports;
+    }
+
+    /**
+     * Removes case import info from import list.
+     *
+     * @param imports list of imports
+     * @return import for class
+     */
+    private List<String> removeCaseImport(List<String> imports) {
+        if (imports != null && caseImportInfo != null) {
+            String caseImport = IMPORT + caseImportInfo.getPkgInfo() + PERIOD + caseImportInfo.getClassInfo() +
+                    SEMI_COLAN + NEW_LINE;
+            imports.remove(caseImport);
+        }
+        return imports;
+    }
+
+    /**
+     * Removes all temporary file handles.
+     *
+     * @param isErrorOccurred when translator fails to generate java files we
+     *                        need to close all open file handles include temporary files
+     *                        and java files.
+     * @throws IOException when failed to delete the temporary files
+     */
+    public void freeTemporaryResources(boolean isErrorOccurred)
+            throws IOException {
+        boolean isError = isErrorOccurred;
+        /*
+         * Close all java file handles and when error occurs delete the files.
+         */
+        if ((getGeneratedJavaFiles() & INTERFACE_MASK) != 0) {
+            closeFile(getInterfaceJavaFileHandle(), isError);
+        }
+        if ((getGeneratedJavaFiles() & BUILDER_CLASS_MASK) != 0) {
+            closeFile(getBuilderClassJavaFileHandle(), isError);
+        }
+        if ((getGeneratedJavaFiles() & BUILDER_INTERFACE_MASK) != 0) {
+            closeFile(getBuilderInterfaceJavaFileHandle(), true);
+        }
+        if ((getGeneratedJavaFiles() & IMPL_CLASS_MASK) != 0) {
+            closeFile(getImplClassJavaFileHandle(), true);
+        }
+
+        /*
+         * Close all temporary file handles and delete the files.
+         */
+        if ((getGeneratedTempFiles() & GETTER_FOR_CLASS_MASK) != 0) {
+            closeFile(getGetterImplTempFileHandle(), true);
+        }
+        if ((getGeneratedTempFiles() & ATTRIBUTES_MASK) != 0) {
+            closeFile(getAttributesTempFileHandle(), true);
+        }
+        if ((getGeneratedTempFiles() & HASH_CODE_IMPL_MASK) != 0) {
+            closeFile(getHashCodeImplTempFileHandle(), true);
+        }
+        if ((getGeneratedTempFiles() & TO_STRING_IMPL_MASK) != 0) {
+            closeFile(getToStringImplTempFileHandle(), true);
+        }
+        if ((getGeneratedTempFiles() & EQUALS_IMPL_MASK) != 0) {
+            closeFile(getEqualsImplTempFileHandle(), true);
+        }
+        if ((getGeneratedTempFiles() & FROM_STRING_IMPL_MASK) != 0) {
+            closeFile(getFromStringImplTempFileHandle(), true);
+        }
+    }
+
+    /**
+     * Returns if the attribute needs to be accessed in a qualified manner or
+     * not, if it needs to be imported, then the same needs to be done.
+     *
+     * @param importInfo import info for the current attribute being added
+     * @return status of the qualified access to the attribute
+     */
+    public boolean getIsQualifiedAccessOrAddToImportList(
+            JavaQualifiedTypeInfo importInfo) {
+
+        return getJavaImportData().addImportInfo(importInfo, getGeneratedJavaClassName(),
+                getJavaFileInfo().getPackage());
+    }
+
+    /**
+     * Checks if the import info is same as the package of the current generated
+     * java file.
+     *
+     * @param importInfo import info for an attribute
+     * @return true if the import info is same as the current nodes package
+     * false otherwise
+     */
+    public boolean isImportPkgEqualCurNodePkg(JavaQualifiedTypeInfo importInfo) {
+        return getJavaFileInfo().getPackage()
+                .contentEquals(importInfo.getPkgInfo());
+    }
+}