java - 比较时间并重复执行某些任务

Question

如果时间介于两者之间，我想定期执行任务

9 AM to 9:11 AM 

我能够捕获当前时间，但是请告诉我如何将其与上述条件进行比较？

public class Test  {
    public static void main(String[] args) {
        SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
        String systemTime = sdf.format(new Date()).toString();
        System.out.println(systemTime);
    }
}

Answer 1

您可以使用 while 循环来实现这一点:

public static void main(String[] args) {

    SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
    String systemTime = sdf.format(new Date()).toString();

    String START = "09:00:00";
    String END = "09:11:00";

    while (compareTime(systemTime, START, END))
    {
        System.out.println("Your task here");
        systemTime = sdf.format(new Date()).toString();
    }
}

private static boolean compareTime(String systemTime, String START, String END)
{
    return systemTime.compareTo(START) >= 0 && systemTime.compareTo(END) <= 0;
}