import java.awt.Graphics;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
/**
 * Java中用线程实现带有滚动效果的Label标签
 * @author 五斗米 <如转载请保留作者和出处>
 * @blog http://blog.csdn.net/mq612
 */

public class Test extends JFrame {

 private static final long serialVersionUID = -2397593626990759111L;

 private JPanel pane = null;

 private MoveLabel label = null;

 public Test() {
  super("Test");
  pane = new JPanel();
  label = new MoveLabel("带有滚动效果的标签");
  pane.add(label);
  this.getContentPane().add(pane);
  this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  this.setSize(300, 200);
  this.setVisible(true);
 }

 public static void main(String args[]) {
  new Test();
 }

 /**
  * 带有滚动效果的Label标签，可继续拓展很多特效，例如颜色变换、速度变换等
  */
 private class MoveLabel extends JLabel implements Runnable {

  private static final long serialVersionUID = 1891684760189602720L;

  private String text = null;

  private Thread thread = null;

  private int x = 0;

  private int w = 0, h = 0;

  public MoveLabel(String text) {
   super(text);
   this.text = text;
   thread = new Thread(this);
   thread.start();
  }

  public String getText() {
   return text;
  }

  public void setText(String text) {
   super.setText(text);
   this.text = text;
  }

  protected void paintComponent(Graphics g) {
   super.paintComponent(g);
   g.setColor(this.getBackground());
   g.fillRect(0, 0, w = this.getWidth(), h = this.getHeight());
   g.setColor(this.getForeground());
   g.setFont(this.getFont());
   g.drawString(text, x, h - 2);
  }

  public void run() {
   while (true) {
    x -= 2;
    if (x < -w) {
     x = w;
    }
    this.repaint();
    try {
     Thread.sleep(50);
    } catch (InterruptedException e) {
     e.printStackTrace();
    }
   }
  }
 }

}