获取时间

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

try {  
            //获取当前日期  
            Date date = new Date();  
            SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd");  
            String nowDate = sf.format(date);   
            //通过日历获取下一天日期  
            Calendar cal = Calendar.getInstance();  
            cal.setTime(sf.parse(nowDate)); 
            //获取甲方签字时间 
            cal.add(Calendar.DAY_OF_YEAR, -2); 
            String buyerConfirmDate = sf.format(cal.getTime());  
            //获取乙方签字时间 
            cal.add(Calendar.DAY_OF_YEAR, +1);
            String sellerConfirmDate = sf.format(cal.getTime());
            //获取合同有效期开始时间
            cal.add(Calendar.DAY_OF_YEAR, +2);
            String contractValidDate = sf.format(cal.getTime());
            //获取合同有效期结束时间
            cal.add(Calendar.DAY_OF_YEAR, +365);
            String contractStopDate = sf.format(cal.getTime());
            vars.put("realReceiveDate",contractValidDate);
        } catch (Exception e) {  
            // TODO: handle exception  
        }