class Foo {
    String name;
    public Foo(String s) {
        name = s;
    }
    public void setName(String s) {
        name = s;
    }
    public String getName() {
        return name;
    }
}
class FooBar extends Foo implements Runnable {
    public FooBar(String s) {
        super(s);
    }
    public void run() {
        for (int i = 0; i < 10; i++)
            System.out.println(getName() + ": Hello World");
    }
    public static void main(String[] args) {
        FooBar f1 = new FooBar("Romeo");
        Thread t1 = new Thread(f1);
        t1.start();
        FooBar f2 = new FooBar("Juliet");
        Thread t2 = new Thread(f2);
        t2.start();
    }
}