burmashave.java

java2编程21天自学通中的源码

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class BurmaShave extends JFrame implements Runnable {
    CardLayout card = new CardLayout();
    JLabel[] lab = new JLabel[6];
    int current = 0;
    Thread runner;
    Container pane;

    public BurmaShave() {
        super("Sign");
        setSize(160, 60);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        pane = getContentPane();
        lab[0] = new JLabel("Grandpa's beard");
        lab[1] = new JLabel("Was stiff and coarse.");
        lab[2] = new JLabel("And that's what caused");
        lab[3] = new JLabel("His fifth");
        lab[4] = new JLabel("Divorce.");
        lab[5] = new JLabel("Burma Shave.");
        pane.setLayout(card);
        for (int i = 0; i < 6; i++)
            pane.add("Card " + i, lab[i]);
        setContentPane(pane);
        show();
    }

    public void startAnimation() {
        if (runner == null) {
            runner = new Thread(this);
            runner.start();
        }
    }

    public void run() {
        Thread thisThread = Thread.currentThread();
        while (runner == thisThread) {
            card.show(pane, "Card " + current);
            current++;
            if (current > 5)
                current = 0;
            repaint();
            try {
                Thread.sleep(5000);
            } catch (InterruptedException e) { }
        }
    }

    public static void main(String[] arguments) {
        BurmaShave bs = new BurmaShave();
        bs.startAnimation();
    }
}