java画玫瑰花的代码

以下是用Java绘制玫瑰花的基本代码：

import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class Rose extends JPanel {
    private static final long serialVersionUID = 1L;

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);

        int width = getWidth();
        int height = getHeight();
        int centerX = width / 2;
        int centerY = height / 2;
        int r = Math.min(centerX, centerY) - 5;
        g.setColor(Color.RED);

        for (double i = 0; i < Math.PI * 2; i += 0.01) {
            double x = r * Math.cos(6 * i) * Math.cos(i) + centerX;
            double y = r * Math.cos(6 * i) * Math.sin(i) + centerY;
            g.fillOval((int) x, (int) y, 2, 2);
        }
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame("Rose");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(new Rose());
        frame.setSize(600, 600);
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }
}

这个示例程序使用 Java Swing 绘制一朵玫瑰花，利用数学函数计算出每个点的位置，然后在屏幕上绘制出来。你可以根据需要进行修改和优化。