Program which delete an element from given string

/* Program which delete an element from given string */
         
class P19
{
    public static void main(String args[ ])
    {
    String str= new String("JAHVA");
    System.out.println(" String is : "+str);
    str=delete(str,2);
    System.out.println(" After removing 3rd element from given String resultant String is : "+str);
    }

    static String delete(String str, int m)
    {
        int len = str.length();
        String s1 = str.substring(0,m);
        String s2 = str.substring(m+1);       
        str=s1+s2;
        return(str);
     }

}