Question

java 怎么获取一天的开始时间和结束时间

Answer 1

Date date=new Date();//取时间
date.clearTime()
Calendar calendar = new GregorianCalendar();
calendar.setTime(date);
calendar.set(Calendar.HOUR,0)
calendar.set(Calendar.MINUTE,0)
calendar.set(Calendar.SECOND,0)
calendar.set(Calendar.MILLISECOND,0)
System.out.println("开始时间："+calendar.getTime())
calendar.set(Calendar.HOUR,23)
calendar.set(Calendar.MINUTE,59)
calendar.set(Calendar.SECOND,59)
calendar.set(Calendar.MILLISECOND,999)
System.out.println("结束时间："+calendar.getTime())
可以利用以上代码来实现这个功能