JAVA Medium Date String int type __java

Import Java.text.DateFormat;
Import java.text.ParseException;
Import Java.text.SimpleDateFormat;
Import java.util.Date;
public class Datademo {public
	static void Main (string[] args) throws ParseException {
		
		/
		 * * Converts a Date object to a date-formatted string ,
		 * 
		 * If the style is custom how to solve it.
		 */
		Demo_2 ();
   }

	public static void Demo_2 () throws ParseException {
		String s= "2012--4--19";
		DateFormat dateformat=dateformat.getdateinstance (dateformat.long);
		DateFormat =new SimpleDateFormat ("Yyyy--mm--dd");
		Date Date=dateformat.parse (s);
		SYSTEM.OUT.PRINTLN (date);
	private static void Demo_1 () {
		date date=new date ();
	    DateFormat DateFormat =dateformat.getdateinstance (dateformat.long);
	    DateFormat =dateformat.getdatetimeinstance (dateformat.long,dateformat.long);
	    DateFormat =new SimpleDateFormat ("Yyy--mm--dd");	    
	    String str =dateformat.format (date);
	    System.out.println (str);
	}