【Java】桌面浮動小圖示
阿新 • • 發佈:2018-12-11
package test923; import java.awt.Color; import java.awt.Graphics; import javax.swing.JFrame; import javax.swing.JPanel; public class SimpleAnimation { int x = 70; int y = 70; public static void main(String[] args) { SimpleAnimation gui = new SimpleAnimation(); gui.go(); } private void go() { JFrame frame = new JFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); MyDrawPanel drawPanel = new MyDrawPanel(); frame.getContentPane().add(drawPanel); frame.setSize(300, 300); frame.setVisible(true); for (int i = 0; i < 130; i++) { x++; y++; drawPanel.repaint(); try { Thread.sleep(50); } catch (Exception e) { e.printStackTrace(); } } } class MyDrawPanel extends JPanel { public void paintComponent(Graphics g) { g.setColor(Color.green); g.fillOval(x, y, 40, 40); } } }
執行結果:
package test923; import java.awt.Color; import java.awt.Graphics; import javax.swing.JFrame; import javax.swing.JPanel; public class SimpleAnimation1 { int x = 70; int y = 70; public static void main(String[] args) { SimpleAnimation1 gui = new SimpleAnimation1(); gui.go(); } private void go() { JFrame frame = new JFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); MyDrawPanel drawPanel = new MyDrawPanel(); frame.getContentPane().add(drawPanel); frame.setSize(300, 300); frame.setVisible(true); for (int i = 0; i < 130; i++) { x++; y++; drawPanel.repaint(); try { Thread.sleep(50); } catch (Exception e) { // TODO: handle exception } } } class MyDrawPanel extends JPanel { public void paintComponent(Graphics g) { g.setColor(Color.white); g.fillOval(x, y, this.getWidth(), this.getHeight()); g.setColor(Color.green); g.fillOval(x, y, 40, 40); } } }
執行結果: