JMF_APPLET.rar_JMF appl_applet_applet jmf_java Applet_linux jmf

import java.applet.*; import java.awt.*; import java.net.*; import java.io.*; import javax.media.*; public class Muliplayer extends Applet implements ControllerListener { Player player=null; Component visualComponent=null; Component controlComponent=null; URL url=null; ControllerEvent myevent=null; public void init() { try { url=new URL(getDocumentBase(),"spacemusic.au"); player=Manager.createPlayer(url);//创建播放器. if(player!=null) { player.addControllerListener(this); } else System.out.println("failed to creat player for"+url); } catch(MalformedURLException e) {System.out.println("URL for Music01.mpg is invalid");} catch(IOException e) {System.out.println("URL for Music01 is invalid");} catch(NoPlayerException e) {System.out.println("canot find a player for Music01.mpg");} } public void start() { if(player!=null) player.prefetch();//媒体预提取。 } public void stop() {if(player!=null) { player.stop();player.deallocate();} } public synchronized void controllerUpdate(ControllerEvent event) { myevent=event; if(event instanceof RealizeCompleteEvent) //当发生的事件是RealizeCompleteEvent。 {if((visualComponent=player.getVisualComponent())!=null) {add("Center",visualComponent);} if((controlComponent=player.getControlPanelComponent())!=null) { if(visualComponent!=null) add("South",controlComponent); else add( "Center",controlComponent); } validate();//显示这些组件。 } else if(event instanceof PrefetchCompleteEvent) { player.start(); } } }