java 如何在一定时间后重复调用函数
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How to repeatedly call a function after a certain amount of time
提问by Fisol Rasel
I want to make a function that will be called after certain amount of time. Also, this should be repeated after the same amount of time. For example, the function may be called every 60 seconds.
我想制作一个在一定时间后调用的函数。此外，这应该在相同的时间后重复。例如，该函数可能每 60 秒调用一次。
回答by hmjd
Using java.util.Timer.scheduleAtFixedRate()and java.util.TimerTaskis a possible solution:
使用java.util.Timer.scheduleAtFixedRate()和java.util.TimerTask是一个可能的解决方案：
Timer t = new Timer();
t.scheduleAtFixedRate(
new TimerTask()
{
public void run()
{
System.out.println("hello");
}
},
0, // run first occurrence immediatetly
2000)); // run every two seconds
回答by Tudor
In order to call a method repeatedly you need to use some form of threading that runs in the background. I recommend using ScheduledThreadPoolExecutor:
为了重复调用一个方法，您需要使用某种形式的在后台运行的线程。我建议使用ScheduledThreadPoolExecutor：
ScheduledThreadPoolExecutor exec = new ScheduledThreadPoolExecutor(1);
exec.scheduleAtFixedRate(new Runnable() {
public void run() {
// code to execute repeatedly
}
}, 0, 60, TimeUnit.SECONDS); // execute every 60 seconds
回答by Omkar
Swing Timer is also good idea to implement repeatedly function calls.
Swing Timer 也是实现重复函数调用的好主意。
Timer t = new Timer(0, null);
t.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
//do something
}
});
t.setRepeats(true);
t.setDelay(1000); //1 sec
t.start();
