?? tennisplayer.java
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/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. * */package org.apache.mina.example.tennis;import org.apache.mina.core.service.IoHandler;import org.apache.mina.core.service.IoHandlerAdapter;import org.apache.mina.core.session.IoSession;/** * A {@link IoHandler} implementation which plays a tennis game. * * @author The Apache MINA Project (dev@mina.apache.org) * @version $Rev: 713957 $, $Date: 2008-11-14 10:27:16 +0100 (Fri, 14 Nov 2008) $ */public class TennisPlayer extends IoHandlerAdapter { private static int nextId = 0; /** Player ID **/ private final int id = nextId++; @Override public void sessionOpened(IoSession session) { System.out.println("Player-" + id + ": READY"); } @Override public void sessionClosed(IoSession session) { System.out.println("Player-" + id + ": QUIT"); } @Override public void messageReceived(IoSession session, Object message) { System.out.println("Player-" + id + ": RCVD " + message); TennisBall ball = (TennisBall) message; // Stroke: TTL decreases and PING/PONG state changes. ball = ball.stroke(); if (ball.getTTL() > 0) { // If the ball is still alive, pass it back to peer. session.write(ball); } else { // If the ball is dead, this player loses. System.out.println("Player-" + id + ": LOSE"); session.close(true); } } @Override public void messageSent(IoSession session, Object message) { System.out.println("Player-" + id + ": SENT " + message); } @Override public void exceptionCaught(IoSession session, Throwable cause) { cause.printStackTrace(); session.close(true); }}
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