JAVA question add code in ???

Determine whether a piece placement is well-formed according to the following: 1 it consists of exactly three characters 2 the first character is in the range A .. H (shapes) 3 the second character is in the range A .. H (orientations) 4 the third character is in the range A .. Y and a .. y (locations)   @param piecePlacement A string describing a piece placement  @return True if the piece placement is well-formed  static boolean PiecePlacement(String piecePlacement) { ???  return false; }