字符串轉換成日期型

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

public class DataTest {
 public static void main(String[] args) {
  Date date = new Date();
  SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
  Calendar calendar =  Calendar.getInstance();
  
  //System.out.println("date.getTime():"+date.getTime());
  System.out.println("???????????"+sdf.format(date.getTime()));
  System.out.println("calendar?????"+calendar.get(Calendar.DAY_OF_MONTH));
  System.out.println(calendar.get(Calendar.DAY_OF_WEEK_IN_MONTH));
  
//  System.out.println(sdf.format(date));
  System.out.println("????????????");
  String string ="2013-07-09";
  try{
   System.out.println(sdf.parse(string));
   System.out.println(sdf.parse(string).getTime());
   System.out.println(sdf.parse(string).getTime()/(60000*60*24)/365);
  }catch (Exception e) {
   // TODO: handle exception
   e.printStackTrace();
  }
  
  
 }

}