public int lastIndexIn(CharSequence csq,int fromIndex){
  for (int i=fromIndex; i >= 0; --i) {
    if (contains(csq.charAt(i)))     return i;
  }
  return -1;
}

public int lastIndexIn ( CharSequence csq , int fromIndex ) { for ( int i = fromIndex ; i >= 0 ; -- i ) { if ( contains ( csq . charAt ( i ) ) ) return i ; } return - 1 ; }
returns the last index in the specified character sequence of one of the character of this set .
