//创建一个实例
Calendar calendar = Calendar.getInstance();
//用Calendar的set()方法设置一个日期,注意0月份0代表1;
calendar.set(2015,0,18);
//用Calendar的add()方法在月份加上4个月
calendar.add(Calendar.MONTH,4);
//用Calendar的get(Calendar.YEAR/MONTH/DATE)方法调出相关年月日数据
int year = calendar.get(Calendar.YEAR);
int month = calendar.get(Calendar.MONTH)+1;
int day = calendar.get(Calendar.DATE);
System.out.println(year+"***"+month+"***"+day);
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