import java.awt.Graphics;
import java.awt.Image;
import javax.swing.JFrame;
public class MainImage extends JFrame {
private Image image=null;
public MainImage( ) {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().setLayout(null);//这个要设置成 null
setSize(300,300);
setVisible(true);
}
public void paint(Graphics g){
g.drawImage(image, 0, 0, this);
}
public static void main(String[] args) {
new MainImage();
}
}
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