jdd > ghc --make Main

jdd > ./Main --test
Cases: 9  Tried: 9  Errors: 0  Failures: 0

jdd > javac examples/HelloWorld.java
jdd > ./Main examples/HelloWorld.class
package examples;

class HelloWorld extends java.lang.Object {

    HelloWorld() {
        examples.HelloWorld l0;
        Object s1;
        l0 = this;
        s1 = new Object();
        return;
    }

    public static void main(String[] l0) {
        System.out.println("Hello world!") /* empty assign */ ;
        return;
    }

}