~~~ package draw.a2; import java.awt.*; import javax.swing.*; public class Test extends JFrame { Wdmb2 mb=null; public static void main(String[] args) { Test lx=new Test(); } public Test() { mb=new Wdmb2(); this.add(mb); this.setSize(600,550); this.setLocation(300,280); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setVisible(true); } } class Wdmb2 extends JPanel { public void paint(Graphics g) { Image tp=Toolkit.getDefaultToolkit().getImage(Panel.class.getResource("/test.jpg")); g.drawImage(tp,100,80,400,350,this);//前面兩個數字是坐標，后面兩個數字是長寬 //繪圖用到的圖片要拷貝在src目錄下 /*g.setColor(Color.red); g.setFont(new Font("幼圓",Font.BOLD,50)); g.drawString("同學們，大家好",200,100); */ } } ~~~