复制代码 代码如下:

import java.awt.event.WindowEvent;

import java.awt.event.WindowStateListener;

import javax.swing.JFrame;

public class WinFrame extends JFrame {

public WinFrame(){

this.setName("Window 窗口状态");

this.setSize(300,300);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.addWindowStateListener(new WindowStateListener () {

public void windowStateChanged(WindowEvent state) {

if(state.getNewState() == 1 || state.getNewState() == 7) {

System.out.println("窗口最小化");

}else if(state.getNewState() == 0) {

System.out.println("窗口恢复到初始状态");

}else if(state.getNewState() == 6) {

System.out.println("窗口最大化");

}

}

});

this.setVisible(true);

}

public static void main(String[] args) {

new WinFrame();

}

}

另外一个利用JFrame创建窗体的小例子

利用JFrame创建的窗口分别包含一个标题、最小化按钮、最大化按钮和关闭按钮

复制代码 代码如下:

public class Test(){

public static void main(String[] args){

JFrame frame = new JFrame();

JPanel panel = new JPanel();

JTextArea textArea = new JTextArea();

panel.setLayout(new GridLayout());

textArea.setText("test");

//当TextArea里的内容过长时生成滚动条

panel.add(new JScrollPane(textArea));

frame.add(panel);

frame.setSize(200,200);

frame.setVisible(true);

}

}