Taken from http://milk.com/kodebase/dalvik-docs-mirror/docs/hello-world.html 


 % cat > Foo.java
  class Foo { public static void main(String[] args) {
    System.out.println("Hello, world");
  } }
  (ctrl-D)
  % javac Foo.java
  % dx --dex --output=foo.jar Foo.class
  % ./rund -cp foo.jar Foo
  Hello, world
