Converter tests:

Change test data files extension to "java"

j2k/tests/testData/ast/issues/qualifyStatic.java

@@ -0,0 +1,8 @@
+//file
+import java.util.Calendar
+
+abstract class MyCalendar extends Calendar {
+    public void foo() {
+        int i = ALL_STYLES;
+    }
+}