Converter tests:

Change test data files extension to "java"

j2k/tests/testData/ast/newClassExpression/fullQualifiedName.java

@@ -0,0 +1,10 @@
+//file
+package test;
+
+import java.util.List;
+
+class User {
+  void main() {
+    List list = new java.util.LinkedList();
+  }
+}