在我的程序中，我在背景中显示带有歌曲的图像。歌曲完成后，我需要关闭框架和JInternalFrame。这是代码：
package projectfinal;
import javax.swing.*;
import java.io.File;
import java.io.IOException;
/* MORE IMPORTS */
public class ImagePanel extends javax.swing.JFrame {
public static class audio extends JApplet {
private static final int EXTERNAL_BUFFER_SIZE = 128000;
public void aaudio() {
String strFilename = "E:/zehreelay.wav";
File soundFile = new File(strFilename);
AudioInputStream audioInputStream = null;
try {
audioInputStream = AudioSystem.getAudioInputStream(soundFile);
} catch (Exception e) {
e.printStackTrace();
System.exit(1);
}
AudioFormat audioFormat = audioInputStream.getFormat();
SourceDataLine line = null;
DataLine.Info info = new DataLine.Info(SourceDataLine.class,
audioFormat);
try {
line = (SourceDataLine) AudioSystem.getLine(info);
line.open(audioFormat);
} catch (LineUnavailableException e) {
e.printStackTrace();
System.exit(1);
} catch (Exception e) {
e.printStackTrace();
System.exit(1);
}
line.start();
int nBytesRead = 0;
byte[] abData = new byte[EXTERNAL_BUFFER_SIZE];
while (nBytesRead != -1) {
try {
nBytesRead = audioInputStream.read(abData, 0, abData.length);
} catch (IOException e) {
e.printStackTrace();
}
if (nBytesRead >= 0) {
int nBytesWritten = line.write(abData, 0, nBytesRead);
}
}
line.drain();
line.close();
jInternalFrame1.setVisible(false);
/**
* closing internal frame
*/
}
}
/**
* Creates new form NewJFrame
*/
public ImagePanel() {
initComponents();
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jInternalFrame1 = new javax.swing.JInternalFrame();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jLabel5 = new javax.swing.JLabel();
jLabel6 = new javax.swing.JLabel();
javax.swing.GroupLayout jInternalFrame1Layout = new javax.swing.GroupLayout(jInternalFrame1.getContentPane());
//////////more code////////////////////////////////////
jInternalFrame1.getContentPane().setLayout(jInternalFrame1Layout);
jInternalFrame1.addComponentListener(new java.awt.event.ComponentAdapter() {
public void componentHidden(java.awt.event.ComponentEvent evt) {
hiden(evt);
}
});
/////adding a listner for component///
}
public static void main(String args[]) {
start();
}
private void hiden(java.awt.event.ComponentEvent evt) {
setVisible(false);
}
public static void start() {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new ImagePanel().setVisible(true);
}
});
audio obj = new audio();
obj.aaudio();
}
private static javax.swing.JInternalFrame jInternalFrame1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel10;
private javax.swing.JLabel jLabel11;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
/////more variables...//////
}
这段代码很好，但是当我在没有添加组件监听器的情况下尝试时，getRootPane().SetVisible(false)或者它们jInternalFrame1.getContentPane().setVisible(false)都setVisible(false)没有工作，但只有在添加组件隐藏监听器后才有效。为什么？有什么原因吗？那怎么JInternalFrame工作（JInternalFrame.setVisible(false)）？这有关系rootPane()吗？