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ÎÒÊÔÔËÐйýÁË£¬ÆäÖÐµÄ “Ìýº£.wav”,“Ò»¶¨Òª°®Äã.wav”ÒôƵÎļþÒª·ÅÔÚclassËùÔÚµÄÎļþ¼ÐÖУ¬ÇÒÖ»Ö§³Öwav¸ñʽ
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import java.applet.Applet;
import java.applet.AudioClip;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.net.*;
public class TestAudioClip extends JFrame implements ActionListener,ItemListener {
 
 
 
  boolean looping=false;
  
  
  String[] chioces={"Ìýº£.wav","Ò»¶¨Òª°®Äã.wav"};
  
  URL sound1File1=getClass().getResource(chioces[0]);
  URL sound2File2=getClass().getResource(chioces[1]);
  //private AudioClip sound1;
  
  AudioClip sound1=Applet.newAudioClip(sound1File1);
  AudioClip sound2=Applet.newAudioClip(sound2File2);
  AudioClip chosenClip=sound1;
  
  JComboBox soundFiles=new JComboBox(chioces);
  JButton playButton=new JButton("¿ªÊ¼²¥·Å");
  JButton loopButton=new JButton("Ñ­»·²¥·Å");
  JButton stopButton=new JButton("Í£Ö¹²¥·Å");
  JLabel status=new JLabel("ÇëÑ¡Ôñ²¥·ÅµÄÒôÀÖ");
  JPanel controlPanel=new JPanel();
  Container container=getContentPane();
  
  
  public TestAudioClip(){
   
   super("ÒôÀÖ²¥·ÅÆ÷");
   soundFiles.setBackground(Color.yellow);
   soundFiles.setSelectedIndex(0);
   soundFiles.addItemListener(this);
   
   playButton.addActionListener((java.awt.event.ActionListener) this);
   loopButton.addActionListener((java.awt.event.ActionListener) this);
   stopButton.addActionListener((java.awt.event.ActionListener) this);
   stopButton.setEnabled(false);
  


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public class DateTest {
 public static void main(String[] args) {
  Date date = new Date(); // н¨Ò»¸öÈÕÆÚ
  SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); // ¸ñʽ»¯ÈÕÆÚ
  String beforeDate = sdf.format(getDateBefore(date, 10));
  System ......
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