Changing 1 character in a string

Question

following on from my last question...
is there an easy way to set the value of one particular character at a certain index in a string? i'm suprised there's no setChar(index, char) kind of method in String.

Answer 1

You could always roll-your-own, although this doesn't really change the string, it creates a new string (this e.g. is 1-based, adj if you want 0-based)
class testing
  public static void main(String args[])
    String str = "Hello World";
    str = setChar(str,1,'W');
    System.out.println(str);
    System.exit(0);
  private static String setChar(String originalString, int position, char newChar)
    String newString = originalString.substring(0,position-1) + newChar +
                       originalString.substring(position);
    return newString;
}