Question

JAVA怎么实现点击按钮关闭窗口

import java.awt.BorderLayout;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.JButton;
import java.awt.Rectangle;

public class xx extends JFrame {

private static final long serialVersionUID = 1L;
private JPanel jContentPane = null;
private JButton jButton = null;

/**
* This is the default constructor
*/
public xx() {
super();
initialize();
}

/**
* This method initializes this
*
* @return void
*/
private void initialize() {
this.setSize(300, 200);
this.setContentPane(getJContentPane());
this.setTitle("JFrame");
}

/**
* This method initializes jContentPane
*
* @return javax.swing.JPanel
*/
private JPanel getJContentPane() {
if (jContentPane == null) {
jContentPane = new JPanel();
jContentPane.setLayout(null);
jContentPane.add(getJButton(), null);
}
return jContentPane;
}

/**
* This method initializes jButton
*
* @return javax.swing.JButton
*/
private JButton getJButton() {
if (jButton == null) {
jButton = new JButton();
jButton.setBounds(new Rectangle(82, 47, 79, 42));
jButton.setText("关闭");
jButton.addActionListener(new java.awt.event.ActionListener() {
//这里监听器应该怎么写？
public void actionPerformed(java.awt.event.ActionEvent e) {
System.out.println("actionPerformed()"); // TODO Auto-generated Event stub actionPerformed()
}
});
}
return jButton;
}

}
怎么实现点击这个按钮，窗口就会关闭？注意不能是退出虚拟机。好像可以用dispose（）和setvisiable（）方法，具体怎么做？
还有一个main方法，方法里新建了一个类的对象，我现在的困惑是如何引用这个类？

Answer 1

你可以按钮上添加事件把窗口2设置为隐藏。

jButton1.setText("ok");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent e) {
jFrame1.setVisible(false);
}
});

另外 按钮退出的命令是在按钮的事件中写
System.exit(0);

Answer 2

jButton.addActionListener(new java.awt.event.ActionListener() {
//这里监听器应该怎么写？
public void actionPerformed(java.awt.event.ActionEvent e) {
System.out.println("actionPerformed()"); // TODO Auto-generated
this.dispose();
}
});

Answer 3

具体自己去查看API，调用JFrame对象的close()方法。

Answer 4

PlatformUI.getWorkbench().getActiveWorkbenchWindow().close();
放到你按钮点击事件里就型了

Answer 5

JFrame 有个方法setDefaultCloseOperation(int operation)；
其中operation有以下几种
DISPOSE_ON_CLOSE, DO_NOTHING_ON_CLOSE, HIDE_ON_CLOSE
你可以xx x= new xx();
x.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);