Java得到下一天明天，明天时间

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;

/**
* @author Administrator
*
* TODO To change the template for this generated type comment go to Window -
* Preferences - Java - Code Style - Code Templates
*/
public class CTime
{
     private String strTime;

     public CTime(String strTime)
     {
         this.strTime = strTime;
     }

     public void printNextTime()
     {
         Calendar cal = Calendar.getInstance();
         Date date = new Date();
         SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
         try
         {
             date = sdf.parse(this.strTime);
             cal.setTime(date);
             cal.add(cal.DATE, 1);
             System.out.println("下一天的时间是：" + sdf.format(cal.getTime()));
         }
         catch (Exception e)
         {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }
     }

     public static void main(String[] args)
     {
         CTime time = new CTime("2005-12-31");
         time.printNextTime();
     }
}