求助，为什么覆写的paintComponent没调用？

[EaVanCN]

public class LiveTest extends JFrame implements ActionListener{
	
	JButton jb = new JButton("TEST");
	
	public LiveTest(){
		
		this.setTitle("测试程序");
		this.setSize(346, 458);
		this.setLayout(new FlowLayout(FlowLayout.LEFT));
		this.add(jb);
		jb.addActionListener(this);
		this.setLocation(200,120);
		this.setVisible(true);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

	}
	public void paintComponent(Graphics g) {
		super.paintComponents(g);
		g.setColor(new Color(0, 255, 255));
		g.fillRect(230, 230, 230, 230);
	}
		

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new LiveTest();

	}
	@Override
	public void actionPerformed(ActionEvent e) {
		// TODO Auto-generated method stub
		if (e.getSource() == jb) {
			repaint();
		}
	}

}

[ymm0514]

描述的不清楚，你应该把你调用的代码给弄出来

[-江沐风-]

repaint();

[EaVanCN]

引用 2 楼 u012724379 的回复:

repaint();

什么意思？

[vnvlyp]

JFrame没有paintComponent方法，所以你没有override 只有JPanel等轻量级JComponent才有paintComponent

[EaVanCN]

引用 4 楼 vnvlyp 的回复:

JFrame没有paintComponent方法，所以你没有override 只有JPanel等轻量级JComponent才有paintComponent

谢谢你