Java: Print a unique character in a string

Question

I\'m writing a program that will print the unique character in a string (entered through a scanner). I\'ve created a method that tries to accomplish this but I keep getting

Answer 1

Based on your desired output you can replace each character already present with a blank character.

public static void uniqueCharacters(String test){
  String temp = "";
  for(int i = 0; i < test.length(); i++){
      if (temp.indexOf(test.charAt(i)) == - 1){
         temp = temp + test.charAt(i);
      } else {
         temp.replace(String.valueOf(temp.charAt(i)), "");
      }
 }

System.out.println(temp + " ");

}