Java日期类型与String的转换

1.String转Date 

SimpleDateFormat sdf = new SimpleDateFormat("yyyymmdd");
String date = "20100701";
try {
     System.out.println(sdf1.format(sdf.parse(date)));
    } catch (ParseException e) {
       e.printStackTrace(); /
    }

2. Date转String 

Date date1 = new Date();
 SimpleDateFormat sdf1 = new SimpleDateFormat("yyyy-MM-dd");
 String str1 = sdf1.format(date1);