Checking if 2 strings contain the same characters?

Question

Is there a way to check if two strings contain the same characters. For example,

abc, bca -> true
aaa, aaa -> true
aab, bba -> false
abc, def ->          


        

Answer 1

Maybe it's not the fastest answer, but it must be shortest answer.

boolean hasSameChar(String str1, String str2){
  for(char c : str1.toCharArray()){
    if(str2.indexOf(c) < 0 ) return false;
  }
  for(char c : str2.toCharArray()){
    if(str1.indexOf(c) < 0 ) return false;
  }
  return true;
}