Multithreaded "yes"

yes.java

public class yes extends Thread{
    static String yes;
    public void run(){
	for(;;){
	    if(yes == null){
		System.out.println("y");
	    }
	    else{
		System.out.println(yes);
	    }
	}
    }
    public static void main(String args[]) {
	if(args.length > 0){
	    yes = args[0];
	}
        (new yes()).start();
    }

}

And yes, this is a joke ;)