day27-1计算活了多少天

package zuoye;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class zuoye1 {
public static void main(String[] args) throws ParseException{
fu();
}
public static void fu() throws ParseException{
SimpleDateFormat a=new SimpleDateFormat("yyyy-MM-dd");
Date a1=a.parse("1995-5-10");
Date a2=a.parse("2019-3-19");
long a3=a1.getTime();
long a4=a2.getTime();
int a5=(int) ((a4-a3)/1000/60/60/24);
System.out.println(a5);
}
}