TOM (rewriting language) Hello World Example

public class HelloWorld {
 %include { string.tom }
 public final static void main(String[] args) {
   String who = "world";
   %match(String who) {
     "World" -> { System.out.println("Hello, " + who + "!"); }
     _       -> { System.out.println("Don't panic"); }
   }
 }