diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/translator/tojava/utils/ClassDefinitionGenerator.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/translator/tojava/utils/ClassDefinitionGenerator.java
new file mode 100644
index 0000000..736f40c
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/translator/tojava/utils/ClassDefinitionGenerator.java
@@ -0,0 +1,112 @@
+/*
+ * Copyright 2016 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 org.onosproject.yangutils.translator.GeneratedFileType;
+import org.onosproject.yangutils.utils.UtilConstants;
+
+/**
+ * Generates class definition for generated files.
+ */
+public final class ClassDefinitionGenerator {
+
+    /**
+     * Default constructor.
+     */
+    private ClassDefinitionGenerator() {
+    }
+
+    /**
+     * Generate class definition for specific classes.
+     *
+     * @param genFileTypes generated file type
+     * @param yangName class name
+     * @return class definition
+     */
+    public static String generateClassDefinition(GeneratedFileType genFileTypes, String yangName) {
+
+        /**
+         * based on the file type and the YANG name of the file, generate
+         * the class / interface definition start.
+         */
+        if (genFileTypes.equals(GeneratedFileType.INTERFACE)) {
+
+            return getInterfaceDefinition(yangName);
+        } else if (genFileTypes.equals(GeneratedFileType.BUILDER_CLASS)) {
+
+            return getBuilderClassDefinition(yangName);
+        } else if (genFileTypes.equals(GeneratedFileType.IMPL)) {
+
+            return getImplClassDefinition(yangName);
+        } else if (genFileTypes.equals(GeneratedFileType.BUILDER_INTERFACE)) {
+
+            return getBuilderInterfaceDefinition();
+        }
+        return null;
+    }
+
+    /**
+     * Returns interface file class definition.
+     *
+     * @param yangName file name
+     * @return definition
+     */
+    private static String getInterfaceDefinition(String yangName) {
+
+        return UtilConstants.PUBLIC + UtilConstants.SPACE + UtilConstants.INTERFACE + UtilConstants.SPACE + yangName
+                + UtilConstants.SPACE + UtilConstants.OPEN_CURLY_BRACKET + UtilConstants.NEW_LINE;
+    }
+
+    /**
+     * Returns builder interface file class definition.
+     *
+     * @return definition
+     */
+    private static String getBuilderInterfaceDefinition() {
+        return UtilConstants.INTERFACE + UtilConstants.SPACE + UtilConstants.BUILDER + UtilConstants.SPACE
+                + UtilConstants.OPEN_CURLY_BRACKET + UtilConstants.NEW_LINE;
+    }
+
+    /**
+     * Returns builder file class definition.
+     *
+     * @param yangName file name
+     * @return definition
+     */
+    private static String getBuilderClassDefinition(String yangName) {
+
+        return UtilConstants.PUBLIC + UtilConstants.SPACE + UtilConstants.CLASS + UtilConstants.SPACE + yangName
+                + UtilConstants.BUILDER + UtilConstants.SPACE + UtilConstants.IMPLEMENTS + UtilConstants.SPACE
+                + yangName + UtilConstants.PERIOD + UtilConstants.BUILDER + UtilConstants.SPACE
+                + UtilConstants.OPEN_CURLY_BRACKET + UtilConstants.NEW_LINE;
+    }
+
+    /**
+     * Returns impl file class definition.
+     *
+     * @param yangName file name
+     * @return definition
+     */
+    private static String getImplClassDefinition(String yangName) {
+
+        return UtilConstants.PUBLIC + UtilConstants.SPACE + UtilConstants.FINAL + UtilConstants.SPACE
+                + UtilConstants.CLASS + UtilConstants.SPACE + yangName + UtilConstants.IMPL + UtilConstants.SPACE
+                + UtilConstants.IMPLEMENTS + UtilConstants.SPACE + yangName + UtilConstants.OPEN_CURLY_BRACKET
+                + UtilConstants.SPACE + UtilConstants.NEW_LINE;
+    }
+
+}