实验十四

实验代码：

 

package 实验十四;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

 

public class SwitchTest {

 

    private JFrame jFrame;

    private JLabel jl1;

    private JLabel jl2;

    private JLabel jl3;

 

    public static void main(String[] args) {

        new SwitchTest().getTime();

    }

 

    private void getTime() {

        long time = 3600;

        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--;

        }

    }

    public SwitchTest() {

        jFrame = new JFrame("倒计时");

jl1 = new JLabel();

        jl2 = new JLabel();

        jl3 = new JLabel();

        init();

    }

    private void init() {

        JPanel jPanel = new JPanel();

        jPanel.add(jl1);

        jPanel.add(jl2);

        jPanel.add(jl3);

        jFrame.add(jPanel);

        jFrame.setVisible(true);

        jFrame.setLocation(300, 400);

        jFrame.setSize(300, 200);

        jFrame.setDefaultCloseOperation(jFrame.EXIT_ON_CLOSE);

    }

}

 

 

结果：

 

转载于:https://www.cnblogs.com/JinnyWang/p/11111436.html