자바 날짜 형식

class OutDate
{
 public static void main(String[] args)
 {
 java.util.Date setValue = new java.util.Date();
 String strSetValue;
 System.out.println("[Date -> String]");
 java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss");   
 java.text.SimpleDateFormat ymd = new java.text.SimpleDateFormat("yyyy-MM-dd");   
 strSetValue = sdf.format(setValue);
 System.out.println(strSetValue);
 strSetValue = ymd.format(setValue);
 System.out.println(strSetValue);
 }
}
/*
[Date -> String]

Date setValue = new Date();

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");   
strSetValue = sdf.format(setValue);
 

[String-> Date]

String value = "2008-01-30";

DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Date tmp = df.parse(value);

[어제 날짜 얻기]

Calendar calendar1 = new GregorianCalendar();
calendar1.add(Calendar.DATE, -1);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");   
String defaultStartRegDate = sdf.format(calendar1.getTime());

*/