public class HelloWorld {

	public static void main(String []arvc){
		System.out.print("Hello world");
	}

}
@@ -19,16 +19,37 @@
 World %7B%0A
+%09private String echo;
 %0A%09public
@@ -122,8 +122,9 @@
 );%0A%09%7D%0A%0A%7D
+%0A

Update HelloWorld