J2ME中文教程 7 开发无线网络应用程序[45]

            parent.destroyApp(true);

            parent.notifyDestroyed();

        }

    }

    public void stop()

    {

    }

}

客户端代码则是建立连接后向服务器端发送数据，并等待接受服务器返回的数据。

package com.siemens.datagramtest;

import java.io.IOException;

import javax.microedition.io.ConnectionNotFoundException;

import javax.microedition.io.Connector;

import javax.microedition.io.Datagram;

import javax.microedition.io.DatagramConnection;

import javax.microedition.lcdui.Alert;

import javax.microedition.lcdui.AlertType;

import javax.microedition.lcdui.Command;

import javax.microedition.lcdui.CommandListener;

import javax.microedition.lcdui.Display;

import javax.microedition.lcdui.Displayable;

import javax.microedition.lcdui.Form;

import javax.microedition.lcdui.StringItem;

import javax.microedition.lcdui.TextField;

public class Client implements Runnable, CommandListener

{

    private DatagramMIDlet parent;

    private Display display;

    private Form f;

    private StringItem si;

    private TextField tf;

    private Command sendCommand = new Command("Send", Command.ITEM, 1);