“Mon Mar 25 00:00:00 CST 2002”转换成“2002-03-25”格式

“Mon Mar 25 00:00:00 CST 2002”怎么转换成“2002-03-25”，Java代码怎么写

http://zhidao.baidu.com/link?url=SeqTIqJ9L1UioTleW3zFzDOb8FmaKid5ZYBEV7cZZMcJxyXO7GimcPbaiW_eswzJB9jUqhSf5ZUEsb3IuH_zWdgyyYsL5yemitz0IVTptSa

是Date的默认格式显示
Date date=new Date();
System.out.println(date);
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");
String sDate=sdf.format(date);
System.out.println(sDate);

输出结果是
Mon Mar 02 12:06:29 CST 2015