YANG translator error handler framework and UT fixes.

Change-Id: Icb4d65540ed7ea8d6ecbd8458d44d7d86df969fa
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/translator/tojava/javamodel/YangJavaTypeDef.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/translator/tojava/javamodel/YangJavaTypeDef.java
index a8cc75b..7440461 100644
--- a/utils/yangutils/src/main/java/org/onosproject/yangutils/translator/tojava/javamodel/YangJavaTypeDef.java
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/translator/tojava/javamodel/YangJavaTypeDef.java
@@ -18,6 +18,7 @@
 import java.io.IOException;
 
 import org.onosproject.yangutils.datamodel.YangTypeDef;
+import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.HasJavaFileInfo;
 import org.onosproject.yangutils.translator.tojava.HasJavaImportData;
 import org.onosproject.yangutils.translator.tojava.HasTempJavaCodeFragmentFiles;
@@ -75,7 +76,7 @@
     public JavaFileInfo getJavaFileInfo() {
 
         if (javaFileInfo == null) {
-            throw new RuntimeException("Missing java info in java datamodel node");
+            throw new TranslatorException("Missing java info in java datamodel node");
         }
         return javaFileInfo;
     }
@@ -87,7 +88,6 @@
      */
     @Override
     public void setJavaFileInfo(JavaFileInfo javaInfo) {
-
         javaFileInfo = javaInfo;
     }
 
@@ -98,7 +98,6 @@
      */
     @Override
     public JavaImportData getJavaImportData() {
-
         return javaImportData;
     }
 
@@ -110,7 +109,6 @@
      */
     @Override
     public void setJavaImportData(JavaImportData javaImportData) {
-
         this.javaImportData = javaImportData;
     }
 
@@ -121,11 +119,6 @@
      */
     @Override
     public TempJavaCodeFragmentFiles getTempJavaCodeFragmentFiles() {
-
-        if (tempFileHandle == null) {
-            throw new RuntimeException("missing temp file hand for current node "
-                    + getJavaFileInfo().getJavaName());
-        }
         return tempFileHandle;
     }
 
@@ -136,7 +129,6 @@
      */
     @Override
     public void setTempJavaCodeFragmentFiles(TempJavaCodeFragmentFiles fileHandle) {
-
         tempFileHandle = fileHandle;
     }
 
@@ -170,11 +162,11 @@
 
     /**
      * Create a java file using the YANG grouping info.
+     *
      * @throws IOException IO operations fails
      */
     @Override
     public void generateCodeExit() throws IOException {
-
         getTempJavaCodeFragmentFiles().generateJavaFile(GENERATE_TYPEDEF_CLASS, this);
     }