29. String charAt( ) and concatenation example

• Code that removes dashes from a phone number:

  
  String phoneNumber3 = "977-555-1212";
  String phoneNumber4 = "";
  for(int i = 0; i < phoneNumber3.length(); i++) {
      if (phoneNumber3.charAt(i) != '-') {
          phoneNumber4 += phoneNumber3.charAt(i);
      }
  }