datagramserverthread.java

基于J2me的手机软件演示例子

package com.wy.ch11;

import javax.microedition.lcdui.*;
import javax.microedition.io.*;

public class DatagramServerThread extends Thread{
    private TextBox tb;
    public DatagramServerThread(TextBox t) {
        tb=t;
    }
    
    public void run(){
        DatagramConnection dc=null;
        String url="datagram://:12345";
        try{
            dc=(DatagramConnection)Connector.open(url);
            while(true){
                Datagram dg=dc.newDatagram(2000);
                dc.receive(dg);
                StringBuffer buffer=new StringBuffer("发送的信息是：");
                String messgae=dg.readUTF();
                buffer.append(messgae);
                tb.setString(tb.getString()+buffer+"\n");
            }//while
        }catch(Exception e){
        } finally{
            try{
                if(dc!=null){
                    dc.close();
                }
            }catch(Exception e){
            }
        }
    }
    
}