String helper functions for Scala lang

StringUtils.scala

object StringUtils
{
  def isEmpty(str: String): Boolean = str == null || str.trim == ""

  def isAnyEmpty(arr: String*): Boolean = arr.count(str => str == null || str.trim == "") > 0

  def getFirstEmpty(arr: String*): String = {
    val group = arr.filter(str => str == null || str.trim == "")

    if (group.isEmpty) null else group.head
  }
}