importjava.awt.*;importjava.awt.event.*;publicclassTestextendsFrame{publicTest(){initComponent();}privatevoidinitComponent(){setTitle("面板示例");setSize(345,216);Panelpa...

import java.awt.*;

import java.awt.event.*;

public class Test extends Frame{

public Test(){

initComponent();

}

private void initComponent(){

setTitle("面板示例");

setSize(345,216);

Panel panel = new Panel();

panel.setBackground(Color.ORANGE);

add(panel);

Label labelJava = new Label("Java!");

labelJava.setFont(new Font("隸書",1,30));

panel.add(labelJava);

Button exitbtn = new Button("退出");

panel.add(exitbtn);

addWindowListener(new WindowAdapter(){

public void windowClosing(WindowEvent evt){

System.exit(0);

}

});

add(new DrawGraphics());

}

public static void main(String[] args){

new Test().setVisible(true);

}

}

class DrawGraphics extends Canvas{

public void paint(Graphics g){

g.setColor(Color.BLACK);

g.drawOval(50, 50, 20, 20);

}

}

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