?? chessmessagequeue.java
字號:
package org.acerge.message.impl;
import java.util.ArrayList;
import org.acerge.message.Message;
import org.acerge.message.MessageQueue;
public class ChessMessageQueue implements MessageQueue{
private ArrayList msgQueue=new ArrayList();
public synchronized Message getAMessage() {
if(msgQueue.size()>0) return (Message) msgQueue.remove(0);
return null;
}
public synchronized void putAMessage(Message msg) {
msgQueue.add(msg);
}
public synchronized boolean isEmpty() {
return msgQueue.size()==0;
}
public synchronized void removeAll(){
msgQueue.clear();
}
}
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