messagequeue.java

生产者 消费者

import java.util.*;

public class MessageQueue {
	
	public MessageQueue(){
		queue = new Vector();
	}
	
	public void send(Object item){
		queue.addElement(item);
		t3.setText("send");
	}
	
	public Object receive(){
		Object item;
		
		if (queue.size() == 0){
			return -1;}
		else {
			item = queue.firstElement();
			queue.removeElementAt(0);
			t3.setTet("Removed");
			
			return item;
		}
	}
	private Vector queue;

}