日期格式化显示

import java.util.*;
import java.text.*;

public class fmat {
 public static void main(String[] args) {
   Date now = new Date();

   DateFormat df = DateFormat.getDateInstance();
   DateFormat df1 = DateFormat.getDateInstance(DateFormat.SHORT);
   DateFormat df2 = DateFormat.getDateInstance(DateFormat.MEDIUM);
   DateFormat df3 = DateFormat.getDateInstance(DateFormat.LONG);
   DateFormat df4 = DateFormat.getDateInstance(DateFormat.FULL);
   String s = df.format(now);
   String s1 = df1.format(now);
   String s2 = df2.format(now);
   String s3 = df3.format(now);
   String s4 = df4.format(now);

   System.out.println("(Default) Today is "+ s);
   System.out.println("(SHORT) Today is " + s1);
   System.out.println("(MEDIUM) Today is " + s2);
   System.out.println("(LONG) Today is " + s3);
   System.out.println("(FULL) Today is " + s4);

 }
}