diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/translator/tojava/utils/JavaExtendsListHolder.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/translator/tojava/utils/JavaExtendsListHolder.java
new file mode 100644
index 0000000..64e7fe6
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/translator/tojava/utils/JavaExtendsListHolder.java
@@ -0,0 +1,151 @@
+/*
+ * 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.utils;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.onosproject.yangutils.datamodel.YangNode;
+import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.JavaFileInfoContainer;
+import org.onosproject.yangutils.translator.tojava.JavaImportData;
+import org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo;
+
+import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_SERVICE_AND_MANAGER;
+import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.getTempJavaFragement;
+import static org.onosproject.yangutils.utils.UtilConstants.COMMA;
+import static org.onosproject.yangutils.utils.UtilConstants.DIAMOND_CLOSE_BRACKET;
+import static org.onosproject.yangutils.utils.UtilConstants.DIAMOND_OPEN_BRACKET;
+import static org.onosproject.yangutils.utils.UtilConstants.EVENT_LISTENER_STRING;
+import static org.onosproject.yangutils.utils.UtilConstants.EVENT_STRING;
+import static org.onosproject.yangutils.utils.UtilConstants.EXTEND;
+import static org.onosproject.yangutils.utils.UtilConstants.LISTENER_REG;
+import static org.onosproject.yangutils.utils.UtilConstants.NEW_LINE;
+import static org.onosproject.yangutils.utils.UtilConstants.PERIOD;
+import static org.onosproject.yangutils.utils.UtilConstants.SPACE;
+
+/**
+ * Represent the extends list for generated java classes. It holds the class details which needs
+ * to be extended by the generated java code.
+ */
+public class JavaExtendsListHolder {
+
+    /**
+     * Creates an instance of JavaExtendsListHolder.
+     */
+    public JavaExtendsListHolder() {
+        setExtendedClassStore(new HashMap<>());
+        setExtendsList(new ArrayList<>());
+    }
+
+    private Map<JavaQualifiedTypeInfo, Boolean> extendedClassStore;
+    private List<JavaQualifiedTypeInfo> extendsList;
+
+    /**
+     * Returns extends list.
+     *
+     * @return extends list
+     */
+    public Map<JavaQualifiedTypeInfo, Boolean> getExtendedClassStore() {
+        return extendedClassStore;
+    }
+
+    /**
+     * Sets extends list.
+     *
+     * @param extendsList list of classes need to be extended
+     */
+    private void setExtendedClassStore(Map<JavaQualifiedTypeInfo, Boolean> extendedClass) {
+        this.extendedClassStore = extendedClass;
+    }
+
+    /**
+     * Adds to the extends list.
+     *
+     * @param info java file info
+     * @param node YANG node
+     */
+    public void addToExtendsList(JavaQualifiedTypeInfo info, YangNode node) {
+        JavaFileInfo fileInfo = ((JavaFileInfoContainer) node).getJavaFileInfo();
+
+        if (!fileInfo.getPackage().equals(info.getPkgInfo())) {
+            JavaImportData importData = getTempJavaFragement(node).getJavaImportData();
+            importData.addImportInfo(info);
+            /*true means import should be added*/
+            getExtendedClassStore().put(info, true);
+        }
+        getExtendedClassStore().put(info, false);
+        addToExtendsList(info);
+    }
+
+    /**
+     * Returns extends string for class.
+     *
+     * @param genFileType generated file type
+     * @param className class name
+     * @param isNotificationPresent if notification node is present
+     * @return extends string
+     */
+    public String getExtendsString(int genFileType, String className, boolean isNotificationPresent) {
+        String extend = EXTEND + SPACE;
+        if (genFileType == GENERATE_SERVICE_AND_MANAGER && isNotificationPresent) {
+            extend = extend + LISTENER_REG + DIAMOND_OPEN_BRACKET + className + EVENT_STRING + COMMA + SPACE
+                    + className + EVENT_LISTENER_STRING + DIAMOND_CLOSE_BRACKET + NEW_LINE;
+        } else {
+            for (JavaQualifiedTypeInfo info : getExtendsList()) {
+                if (info.getClassInfo().equals(className)) {
+                    if (!getExtendedClassStore().get(info)) {
+                        return extend + info.getClassInfo();
+                    } else {
+                        return extend + info.getPkgInfo() + PERIOD + info.getClassInfo();
+                    }
+                }
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Returns extends list.
+     *
+     * @return the extendsList
+     */
+    public List<JavaQualifiedTypeInfo> getExtendsList() {
+        return extendsList;
+    }
+
+    /**
+     * Sets extends info list.
+     *
+     * @param classInfoList the extends List to set
+     */
+    private void setExtendsList(List<JavaQualifiedTypeInfo> classInfoList) {
+        this.extendsList = classInfoList;
+    }
+
+    /**
+     * Adds extends info to list.
+     *
+     * @param classInfo class info
+     */
+    private void addToExtendsList(JavaQualifiedTypeInfo classInfo) {
+        getExtendsList().add(classInfo);
+    }
+
+}