实验十四

冷不防 2021-10-23 07:29 352阅读 0赞

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);
    	}
    }
    
    实验结果：

![1619732-20190630205525180-742844842.png][]

实验心得：本次试验对我来说有难度，今后还需要更努力地练习。

转载于:https://www.cnblogs.com/sj66/p/11111191.html

[1619732-20190630205525180-742844842.png]: /images/20211023/dc0c4f2798e9415b8d0bd0bfb743e03b.png