yang choice case translator + whitebox fix

Change-Id: I96f1855bc71a002335946150b51e911ae6ac2fb2
diff --git a/src/main/java/org/onosproject/yangutils/utils/UtilConstants.java b/src/main/java/org/onosproject/yangutils/utils/UtilConstants.java
index def4cc9..eeee061 100644
--- a/src/main/java/org/onosproject/yangutils/utils/UtilConstants.java
+++ b/src/main/java/org/onosproject/yangutils/utils/UtilConstants.java
@@ -26,12 +26,6 @@
 public final class UtilConstants {
 
     /**
-     * Creates an instance of util constants.
-     */
-    private UtilConstants() {
-    }
-
-    /**
      * JavaDocs for impl class.
      */
     public static final String IMPL_CLASS_JAVA_DOC = " * Represents the implementation of ";
@@ -841,4 +835,10 @@
      * Static attribute for array list.
      */
     public static final String ARRAY_LIST = "ArrayList";
+
+    /**
+     * Creates an instance of util constants.
+     */
+    private UtilConstants() {
+    }
 }
diff --git a/src/main/java/org/onosproject/yangutils/utils/io/impl/FileSystemUtil.java b/src/main/java/org/onosproject/yangutils/utils/io/impl/FileSystemUtil.java
index ffc36f7..c259a7f 100644
--- a/src/main/java/org/onosproject/yangutils/utils/io/impl/FileSystemUtil.java
+++ b/src/main/java/org/onosproject/yangutils/utils/io/impl/FileSystemUtil.java
@@ -55,10 +55,7 @@
     public static boolean doesPackageExist(String pkg) {
         File pkgDir = new File(getPackageDirPathFromJavaJPackage(pkg));
         File pkgWithFile = new File(pkgDir + SLASH + "package-info.java");
-        if (pkgDir.exists() && pkgWithFile.isFile()) {
-            return true;
-        }
-        return false;
+        return (pkgDir.exists() && pkgWithFile.isFile());
     }
 
     /**
diff --git a/src/main/java/org/onosproject/yangutils/utils/io/impl/JavaDocGen.java b/src/main/java/org/onosproject/yangutils/utils/io/impl/JavaDocGen.java
index c793cd6..e2fe7fd 100644
--- a/src/main/java/org/onosproject/yangutils/utils/io/impl/JavaDocGen.java
+++ b/src/main/java/org/onosproject/yangutils/utils/io/impl/JavaDocGen.java
@@ -376,10 +376,10 @@
      * @return javaDocs
      */
     private static String generateForTypeDefSetter(String attribute) {
-        return (NEW_LINE + FOUR_SPACE_INDENTATION + JAVA_DOC_FIRST_LINE + FOUR_SPACE_INDENTATION
+        return NEW_LINE + FOUR_SPACE_INDENTATION + JAVA_DOC_FIRST_LINE + FOUR_SPACE_INDENTATION
                 + JAVA_DOC_SETTERS_COMMON + attribute + PERIOD + NEW_LINE + FOUR_SPACE_INDENTATION + NEW_LINE_ASTERISK
                 + FOUR_SPACE_INDENTATION + JAVA_DOC_PARAM + VALUE + SPACE + VALUE + SPACE + OF + SPACE + attribute
-                + NEW_LINE + FOUR_SPACE_INDENTATION + JAVA_DOC_END_LINE);
+                + NEW_LINE + FOUR_SPACE_INDENTATION + JAVA_DOC_END_LINE;
     }
 
     /**
@@ -491,10 +491,9 @@
      * @return javaDocs for type constructor
      */
     private static String generateForTypeConstructor(String attribute) {
-
-        return (NEW_LINE + FOUR_SPACE_INDENTATION + JAVA_DOC_FIRST_LINE + FOUR_SPACE_INDENTATION + JAVA_DOC_CONSTRUCTOR
+        return NEW_LINE + FOUR_SPACE_INDENTATION + JAVA_DOC_FIRST_LINE + FOUR_SPACE_INDENTATION + JAVA_DOC_CONSTRUCTOR
                 + attribute + PERIOD + NEW_LINE + FOUR_SPACE_INDENTATION + NEW_LINE_ASTERISK + FOUR_SPACE_INDENTATION
                 + JAVA_DOC_PARAM + VALUE + SPACE + VALUE + SPACE + OF + SPACE + attribute + NEW_LINE
-                + FOUR_SPACE_INDENTATION + JAVA_DOC_END_LINE);
+                + FOUR_SPACE_INDENTATION + JAVA_DOC_END_LINE;
     }
 }
diff --git a/src/main/java/org/onosproject/yangutils/utils/io/impl/YangIoUtils.java b/src/main/java/org/onosproject/yangutils/utils/io/impl/YangIoUtils.java
index baf6929..51ca81c 100644
--- a/src/main/java/org/onosproject/yangutils/utils/io/impl/YangIoUtils.java
+++ b/src/main/java/org/onosproject/yangutils/utils/io/impl/YangIoUtils.java
@@ -223,7 +223,7 @@
 
         for (File file : files) {
             Files.copy(file.toPath(),
-                    (new File(path + file.getName())).toPath(),
+                    new File(path + file.getName()).toPath(),
                     StandardCopyOption.REPLACE_EXISTING);
         }
         Resource rsc = new Resource();