本文實例講述了Java基于線程實現帶有滾動效果的Label標簽。分享給大家供大家參考。具體如下：
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import java.awt.Graphics;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;/** * Java中用線程實現帶有滾動效果的Label標簽 */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("帶有滾動效果的標簽"); 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(); } /** * 帶有滾動效果的Label標簽，可繼續拓展很多特效，例如顏色變換、速度變換等 */ 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(); } } } }} |
希望本文所述對大家的java程序設計有所幫助。
