Question

如何利用java得到当前的时间和前一天的时间

Answer 1

SimpleDateFormat format=new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
Date today=new Date();
Date yesterday=new Date(today.getTime()-1000*60*60*24);
String todayTime=format.format(today);
String yesterdayTime=format.format(yesterday);
System.out.println("现在时间："+todayTime);
System.out.println("昨天时间："+yesterdayTime);