UDP.rar_J2ME udp_UDP

/* * To change this template, choose Tools | Templates * and open the template in the editor. */ package gg; import java.io.IOException; import javax.microedition.io.Connector; import javax.microedition.io.Datagram; import javax.microedition.io.UDPDatagramConnection; 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.TextField; import javax.microedition.midlet.*; /** * @author Administrator */ public class Client2 extends MIDlet implements CommandListener,Runnable{ private Display dis; private Form form=new Form("Client"); private Command cmd=new Command("send",Command.SCREEN,1); private TextField tf=new TextField("Input:","",255,TextField.ANY); private UDPDatagramConnection udc; private Datagram data; public void startApp() { dis=Display.getDisplay(this); dis.setCurrent(form); form.append(tf); form.addCommand(cmd); form.setCommandListener(this); try { udc = (UDPDatagramConnection) Connector.open("datagram://localhost:9999"); data=udc.newDatagram(0); udc.send(data); new Thread(this).start(); } catch (IOException ex) { ex.printStackTrace(); } } public void pauseApp() { } public void destroyApp(boolean unconditional) { } public void commandAction(Command c, Displayable d) { if(c==cmd){ byte[] b=tf.getString().getBytes(); try { data = udc.newDatagram(b, b.length); udc.send(data); tf.setString(null); } catch (IOException ex) { ex.printStackTrace(); } } } public void run() { while(true){ try { data = udc.newDatagram(25); udc.receive(data); form.append(new String(data.getData())); } catch (IOException ex) { ex.printStackTrace(); } } } }