Java 获取昨天和明天

package cn.lay.utils;

import java.util.Calendar;
import java.util.Date;

/**
 * 时间处理
 * @author lay
 */
public class DateUtils {
    
    public static Date addDays(Date date, int offset){
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.add(Calendar.DATE, offset);
        return calendar.getTime();
    }

    
}


public static void main(String[] args) {
        Date now = new Date();
        System.out.println("今天：" + now);
        System.out.println("昨天：" + DateUtils.addDays(now, -1));
        System.out.println("明天：" + DateUtils.addDays(now, +1));
}