Java Graphics_5
package com.han;import java.awt.Graphics;import java.awt.Graphics2D;import java.awt.Shape;import java.awt.geom.Ellipse2D;import java.awt.geom.Rectangle2D;import javax.swing.JFrame;import javax.swing.JPanel;@SuppressWarnings("serial")public class Graphics_5 extends JFrame {public Graphics_5() {// TODO Auto-generated constructor stubgetContentPane().add(new CanvasPanel());}class CanvasPanel extends JPanel {public void paint(Graphics g) {super.paint(g);Graphics2D g2 = (Graphics2D) g;Shape[] shapes = new Shape[4];shapes[0] = new Ellipse2D.Double(5, 5, 100, 100);shapes[1] = new Rectangle2D.Double(110, 5, 100, 100);shapes[2] = new Rectangle2D.Double(15, 15, 80, 80);shapes[3] = new Ellipse2D.Double(120, 15, 80, 80);//g2.draw(shapes[0]);//g2.draw(shapes[1]);//g2.fill(shapes[2]);//g2.fill(shapes[3]);for (Shape shape : shapes) {Rectangle2D bounds = shape.getBounds2D();if (bounds.getWidth() == 80)g2.fill(shape);elseg2.draw(shape); // 注意上面的if-else代码块如果有返回值则可以用三元运算符来代替}}}/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubGraphics_5 frame = new Graphics_5();frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.setTitle("JFrame");frame.setSize(300, 200);frame.setVisible(true);}}