Converting into uppercase in a java pgm

Converting into uppercase

public class StringToUpperCaseEmp

 {

   public static void main(String[] args)

   {

      String str = "string abc touppercase ";

      String strUpper = str.toUpperCase();

      System.out.println("Original String: " + str);

      System.out.println("String changed to upper case: "+ strUpper);

   }

}