java 透明界面 java 透明界面

import java.awt.BorderLayout;
import java.awt.Font;
import javax.swing.*;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import com.sun.awt.AWTUtilities;

public class windowopacity extends JFrame implements ChangeListener {

/**
 * 
 */
private static final long serialVersionUID = 1L;

public void stateChanged(ChangeEvent e) {
// TODO Auto-generated method stub
AWTUtilities.setWindowOpacity(this, js.getValue() / 100.0f);

}

/**
 * @param args
 */
JSlider js = new JSlider(1, 100);

JPanel jp = new JPanel();

JLabel jl = new JLabel("我的透明窗体", JLabel.CENTER);

public windowopacity() {