思科路由器的启动维护和配置

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

public class DateTestUtil {

public static void main(String[] args) throws Exception {

SimpleDateFormat sdf=new SimpleDateFormat("yyyyMMdd");
String str="20140313";
Date dt=sdf.parse(str);
Calendar rightNow = Calendar.getInstance();
rightNow.setTime(dt);
rightNow.add(Calendar.YEAR,-1);//日期减1年
rightNow.add(Calendar.MONTH,3);//日期加3个月
rightNow.add(Calendar.DAY_OF_YEAR,10);//日期加10天
Date dt1=rightNow.getTime();
String reStr = sdf.format(dt1);
System.out.println(reStr);

}

}