第12次作业--你的生日

题目：利用Calendar类计算自己的出生日期距今天多少天，再将自己的出生日期利用SimpleDateFormat类设定的格式输出显示。

 代码:

package youolddays;
 import java.text.ParseException;
mport java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Scanner;
import org.junit.Test;

public class yourdaydemo {     
@Test    
public void fun() throws ParseException {    
    Scanner sc = new Scanner(System.in);        
        System.out.println("输入你的出生日期:");        
        String bornDay = sc.nextLine();        
        int days = getLifeDay(bornDay);        
        System.out.println("你已经来到了这个世界" + days + "天.");     } 
    
      public int getLifeDay(String bornDay) throws ParseException {                         SimpleDateFormat sdf = new SimpleDateFormat("yyyy年MM月dd日");        
              Date d = sdf.parse(bornDay);        
              long bornTime = d.getTime();        
              long currentTime = System.currentTimeMillis();        
              long times = currentTime - bornTime;        
              int days = (int) (times / 1000 / 60 / 60 / 24);        
              return days;    
      }
}

运行结果:

来源：https://www.cnblogs.com/jianghongyan1/p/11921829.html