[ONOS-4351][ONOS-4524] Augment linking and defect fixed.

Change-Id: I7c8e8c90579eea4631e014c4906a543a3c249427
diff --git a/src/main/java/org/onosproject/yangutils/translator/tojava/javamodel/YangJavaCase.java b/src/main/java/org/onosproject/yangutils/translator/tojava/javamodel/YangJavaCase.java
index 6d1ac21..eaf5f30 100644
--- a/src/main/java/org/onosproject/yangutils/translator/tojava/javamodel/YangJavaCase.java
+++ b/src/main/java/org/onosproject/yangutils/translator/tojava/javamodel/YangJavaCase.java
@@ -102,20 +102,27 @@
      * case info.
      *
      * @param yangPlugin YANG plugin config
-     * @throws IOException IO operation fail
+     * @throws TranslatorException translator operation fail
      */
     @Override
-    public void generateCodeEntry(YangPluginConfig yangPlugin)
-            throws IOException {
-        generateCodeOfAugmentableNode(this, yangPlugin);
+    public void generateCodeEntry(YangPluginConfig yangPlugin) throws TranslatorException {
+        try {
+            generateCodeOfAugmentableNode(this, yangPlugin);
+        } catch (IOException e) {
+            throw new TranslatorException(
+                    "Failed to prepare generate code entry for case node " + this.getName());
+        }
     }
 
     /**
      * Creates a java file using the YANG case info.
      */
     @Override
-    public void generateCodeExit()
-            throws IOException {
-        getTempJavaCodeFragmentFiles().generateJavaFile(GENERATE_INTERFACE_WITH_BUILDER, this);
+    public void generateCodeExit() throws TranslatorException {
+        try {
+            getTempJavaCodeFragmentFiles().generateJavaFile(GENERATE_INTERFACE_WITH_BUILDER, this);
+        } catch (IOException e) {
+            throw new TranslatorException("Failed to generate code for case node " + this.getName());
+        }
     }
 }