fillRoundRect圆角矩形边角不平滑

[fei得更高]

import java.awt.Color;
import java.awt.Graphics;

import javax.swing.JPanel;

public class BtnImgBgPanle extends JPanel
{
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	private int comWidth;
	private int comHeight;
	
	public BtnImgBgPanle()
	{
		this.comWidth = 100;
		this.comHeight = 30;		
	}
	
	@Override
	public void paint(Graphics g)
	{
		g.setColor(Color.blue);
		g.fillRoundRect(0, 0, comWidth, comHeight, 10, 10);
	}
}

用g.fillRoundRect画的圆角矩形效果很一般：

放大后：

请教大伙，这个怎么解决？

[sunyiz]

你需要开抗锯齿

    @Override
    public void paint(Graphics g)
    {
	Graphics2D g2d = (Graphics2D) g;
	// 设置抗锯齿
	g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

        g.setColor(Color.blue);
        g.fillRoundRect(0, 0, comWidth, comHeight, 10, 10);
    }

[fei得更高]

引用 1 楼 sunyiz 的回复:

你需要开抗锯齿

    @Override
    public void paint(Graphics g)
    {
	Graphics2D g2d = (Graphics2D) g;
	// 设置抗锯齿
	g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

        g.setColor(Color.blue);
        g.fillRoundRect(0, 0, comWidth, comHeight, 10, 10);
    }

确实有效