java - 如何找到给定时间的时差

Question

我的时间格式如下。

String deptTime ="08:00 PM";
String arrTime = "04:00 AM";

如何用 1 小时 30 分钟 .. 等词语准确获取时差

Answer 1

    Calendar cal1 = Calendar.getInstance();
    cal1.set(Calendar.HOUR, 8);
    cal1.set(Calendar.AM_PM, Calendar.PM);


    Calendar cal2 = Calendar.getInstance();
    cal2.set(Calendar.HOUR, 4);
    cal2.set(Calendar.AM_PM, Calendar.AM);
    System.out.println(((cal1.getTimeInMillis()-cal2.getTimeInMillis())/1000)/3600);