Program to compare two strings in Java

import java.util.Scanner;

class CompareStrings
{
   public static void main(String args[])
   {
      String s1, s2;
      Scanner in = new Scanner(System.in);

      System.out.println("Enter the first string");
      s1 = in.nextLine();

      System.out.println("Enter the second string");
      s2 = in.nextLine();

      if ( s1.compareTo(s2) > 0 )
         System.out.println("First string is greater than second.");
      else if ( s1.compareTo(s2) < 0 )
         System.out.println("First string is smaller than second.");
      else   
         System.out.println("Both strings are equal.");
   }
}
Output