问题描述
所以我试图创建一个简单的程序来打印一个矩形,但我遇到了这个问题,我不知道如何解决它。这是我的代码:
import java.awt.Color;
import java.awt.Graphics;
import javax.swing.*;
public class GraphicsEditor extends JPanel{
public void drawShape(Graphics g) {
super.drawShape(g);
g.setColor(Color.BLUE);
g.drawRect(100,100,120,150);
}
public static void main(String[] args) {
JFrame frame = new JFrame();
GraphicsEditor ga = new GraphicsEditor();
frame.setSize(1280,720);
frame.setVisible(true);
frame.setDefaultCloSEOperation(JFrame.EXIT_ON_CLOSE);
frame.add(ga);
}
}
public void drawShape(Graphics g) {
super.drawShape(g);
g.setColor(Color.BLUE);
g.drawRect(100,150);
}