public class Consumer extends Thread {
    private Link link;

    public Consumer( Link link ) {
	this.link = link;
    }

    public void run() {
	while( true ) {
	    do {
		Object o = link.recv();
		if ( o == null ) return;
		Integer i = (Integer)o;
		System.out.println("recv: " + i );
	    } while ( link.getSize() != 0 );
	    try {
		Thread.sleep( 10 );
	    }
	    catch( InterruptedException e ) {
	    }
	}
    }
}