java比较时间

使用Date

before,after这两个可以简单比较时间先后，返回boolean

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
import java.text.ParseException;  
import java.text.SimpleDateFormat;  
import java.util.Date;  
  
public class TimeChecker {  
    public static void main(String[] args) throws InterruptedException, ParseException {  
  
      SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");  
  
	  Date expiratDate = sdf.parse("2024-03-07");  
  
	  Date nowDate = new Date();  
  
	  System.out.println(expiratDate.before(nowDate));  
  
  }  
}