JAVA加减日期

package test;

import java.text.SimpleDateFormat;

import java.util.Calendar;

import java.util.Date;

public

class

T {

public

static

void

main(String[] args) {

Date date =

new

Date();

System.

out

.println((

new

SimpleDateFormat(

"yyyy-MM-dd"

)).format(date));

Calendar cal = Calendar.getInstance();

cal.setTime(date);

//加天

cal.add(Calendar.DATE, 100);

System.

out

.println((

new

SimpleDateFormat(

"yyyy-MM-dd"

)).format(cal.getTime()));

//减天

cal.add(Calendar.DATE, -100);

System.

out

.println((

new

SimpleDateFormat(

"yyyy-MM-dd"

)).format(cal.getTime()));

}

}