[java]代码库
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
/**
* 倒计时
*
*/
public class Counter {
private JFrame frame;
private JLabel jl1;
private JLabel jl2;
private JLabel jl3;
public static void main(String[] args) {
new Counter().getTime();
}
/* 倒计时的主要代码块 */
private void getTime() {
long time = 1 * 36000; // 自定义倒计时时间
long hour = 0;
long minute = 0;
long seconds = 0;
while (time >= 0) {
hour = time / 3600;
minute = (time - hour * 3600) / 60;
seconds = time - hour * 3600 - minute * 60;
jl1.setText(hour + "时");
jl2.setText(minute + "分");
jl3.setText(seconds + "秒");
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
time--;
}
}
/* 构造 实现界面的开发 GUI */
public Counter() {
frame = new JFrame("倒计时");
jl1 = new JLabel();
jl2 = new JLabel();
jl3 = new JLabel();
init();
}
/* 组件的装配 */
private void init() {
JPanel jp = new JPanel();
jp.add(jl1);
jp.add(jl2);
jp.add(jl3);
frame.add(jp);
frame.setVisible(true);
frame.setLocation(300, 400);
frame.setSize(300, 200);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
[代码运行效果截图]
中级程序员
by: 爱做饭的程序员 发表于:2016-11-27 17:05:47 顶(0) | 踩(0) 回复
不能自定义 很尴尬
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