class Swapper { private int id1; private int id2; public Swapper(){ id1=0; id2=0; } public boolean swap(){ return false; } class VThread extends Thread{ private int id; public VThread(int myId){ id=myId; } public void run(){ } public int getid(){ return this.id; } } public static void main(String []args){ Swapper p = new Swapper(); VThread []bunch = new VThread[3]; bunch[0] = new VThread(123); bunch[1] = new VThread(456); bunch[2] = new VThread(789); for(VThread t : bunch){ t.start(); } }}