java获取几天前和几天后的日期

2019独角兽企业重金招聘Python工程师标准>>>

/** 
   * 得到几天前的时间 
   * @param d 
   * @param day 
   * @return 
   */  
  public static Date getDateBefore(Date d,int day){  
   Calendar now =Calendar.getInstance();  
   now.setTime(d);  
   now.set(Calendar.DATE,now.get(Calendar.DATE)-day);  
   return now.getTime();  
  }  
    
  /** 
   * 得到几天后的时间 
   * @param d 
   * @param day 
   * @return 
   */  
  public static Date getDateAfter(Date d,int day){  
   Calendar now =Calendar.getInstance();  
   now.setTime(d);  
   now.set(Calendar.DATE,now.get(Calendar.DATE)+day);  
   return now.getTime();  
  }

转载于:https://my.oschina.net/u/1866821/blog/474265