Java GUI设计——绘制骰子三点的图案

要求： 绘制骰子三点的图案（正方形内3个圆形）

源代码：

import java.awt.*; import java.awt.geom.Ellipse2D; import java.awt.geom.Rectangle2D; import javax.swing.JFrame; import javax.swing.JPanel; public class Dice extends JFrame { DicePanel dicePanel = new DicePanel(); public static void main(String[] args) { Dice frame = new Dice(); frame.setVisible(true); } public Dice() { super(); setTitle("绘制骰子"); setBounds(100, 100, 300, 300); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); add(dicePanel); } } class DicePanel extends JPanel{ public void paint(Graphics g){ Graphics2D g2 = (Graphics2D)g; BasicStroke stroke = new BasicStroke(3); g2.setStroke(stroke); Color color = new Color(0,162,232); double leftX = 100; double topY = 100; double width = 150; double height = 150; var rect = new Rectangle2D.Double(leftX,topY,width,height); g2.draw(rect); var circle1 = new Ellipse2D.Double(120,120,20,20); g2.setPaint(Color.BLUE); g2.fill(circle1); g2.draw(circle1); var circle2 = new Ellipse2D.Double(160,160,20,20); g2.setPaint(Color.BLUE); g2.fill(circle2); g2.draw(circle2); var circle3 = new Ellipse2D.Double(200,200,20,20); g2.setPaint(Color.BLUE); g2.fill(circle3); g2.draw(circle3); } }

效果图： 代码中对于些许距离的把控还不是太好，导致绘制结果不是十分美观，可以自行对代码中的参数进行调整以获得更好的绘制结果