用 Java 打印 60 秒倒计时
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原文地址: http://stackoverflow.com/questions/22416939/
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Print 60 seconds countdown in Java
提问by Douglas Grealis
I've searched everywhere for some simple code to print 60 seconds down, say on a JFrame constructor. So when a JFrame is run, the window title will be shown a countdown from 60-0 seconds (which in my case will shutdown). - No need for code to shutdown.
我到处搜索一些简单的代码来打印 60 秒，比如在 JFrame 构造函数上。因此，当运行 JFrame 时，窗口标题将显示 60-0 秒的倒计时（在我的情况下将关闭）。- 无需关闭代码。
Something on the lines of:
一些关于：
JFrame frame = new JFrame("Window will terminate in: " + java.util.Calendar.SECOND);
Of course the code above does not make sense because it's printing the current time second. But you get the idea.
当然上面的代码没有意义，因为它正在打印当前时间秒。但是你明白了。
采纳答案by Kevin Bowersox
Use a TimerTaskto set the title of the JFrameevery second.
使用 aTimerTask设置JFrame每秒的标题。
public class TimerFrame {
private static JFrame frame = new JFrame();
public static void main(String[] args) {
TimerFrame timerFrame = new TimerFrame();
timerFrame.frame.setVisible(true);
timerFrame.frame.setSize(400,100);
new Timer().schedule(new TimerTask(){
int second = 60;
@Override
public void run() {
frame.setTitle("Application will close in " + second-- + " seconds.");
}
},0, 1000);
}
}
回答by Tim B
Just create a Swing Timerand have a counter initialized at 60.
只需创建一个Swing Timer并将计数器初始化为 60。
Set up the timer to be called every second.
设置定时器每秒调用一次。
Each time reduce the count by one and update the text.
每次将计数减一并更新文本。
When you reach 0 do whatever you do for the end of the countdown and stop the timer.
当您达到 0 时，请在倒计时结束时执行任何操作并停止计时器。
回答by Salah
Try this:
尝试这个：
int count = 60;
while(count != 0){
try {
countlabel.setText(String.valueOf(count));
count--;
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
