Go语言视频零基础入门到精通

javalearner

效果图：

1. import java.awt.Font;
   
2. import java.awt.Graphics;
   
3. import java.awt.Graphics2D;
   
4. import java.awt.font.FontRenderContext;
   
5. import java.awt.geom.AffineTransform;
   
6. import javax.swing.Icon;
   
7. import javax.swing.JFrame;
   
8. import javax.swing.JLabel;
   
9. import sun.security.action.GetPropertyAction;
   
10. public class BackwardsJLabel extends JLabel {
    
11.   
    
12. public BackwardsJLabel () { super(); }
    
13. public BackwardsJLabel (Icon image) {super (image);}
    
14. public BackwardsJLabel (Icon image, int align) {super (image, align);}
    
15. public BackwardsJLabel (String text) { super (text);}
    
16. public BackwardsJLabel (String text, Icon icon, int align) {
    
17.   super (text, icon, align);
    
18. }
    
19. public BackwardsJLabel (String text, int align) {
    
20. super (text, align);
    
21. }
    
22. public void paint (Graphics g) {
    
23.   if (g instanceof Graphics2D) {
    
24.    Graphics2D g2 = (Graphics2D) g;
    
25.    AffineTransform flipTrans = new AffineTransform();
    
26.    double widthD = (double) getWidth();
    
27.    flipTrans.setToTranslation (widthD, 0);
    
28.    flipTrans.scale (-1.0, 1);
    
29.    g2.transform (flipTrans);
    
30.    super.paint(g);
    
31.   } else {
    
32.    super.paint(g);
    
33.   }
    
34. }
    
35. public static void main (String[] args) {
    
36.   BackwardsJLabel field =
    
37.    new BackwardsJLabel ("谁能到懂我说的话?能看懂的赶紧留帖!!");
    
38.   field.setFont(new Font("宋体",0,12));
    
39.   JFrame frame = new JFrame("颠倒的JLabel");
    
40.   frame.getContentPane().add (field);
    
41.   frame.pack();
    
42.   frame.setVisible(true);
    
43. }
    
44. }
    

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源码下载：http://file.javaxxz.com/2014/11/18/235742000.zip