Converter tests:

Change test data files extension to "java"

j2k/tests/testData/ast/switch/comlicatedFallDown.java

@@ -0,0 +1,33 @@
+//file
+package demo;
+
+public class SwitchDemo {
+    public static void print(Object o) {
+        System.out.println(o);
+    }
+
+  public static void test(int i) {
+    String monthString = "<empty>";
+        switch (i) {
+            case 1:  print(1);
+            case 2:  print(2);
+            case 3:  print(3);
+            case 4:  print(4);
+            case 5:  print(5); break;
+            case 6:  print(6);
+            case 7:  print(7);
+            case 8:  print(8);
+            case 9:  print(9);
+            case 10: print(10);
+            case 11: print(11);
+            case 12: monthString = "December"; break;
+            default: monthString = "Invalid month"; break;
+        }
+        System.out.println(monthString);
+  }
+
+    public static void main(String[] args) {
+        for (int i = 1; i <=12 ; i++)
+          test(i);
+    }
+}