public static boolean isPrimitiveWrapperArray(Class<?> clazz){
  Assert.notNull(clazz,"Class must not be null");
  return (clazz.isArray() && isPrimitiveWrapper(clazz.getComponentType()));
}

public static boolean isPrimitiveWrapperArray ( Class < ? > clazz ) { Assert . notNull ( clazz , "Class must not be null" ) ; return ( clazz . isArray ( ) && isPrimitiveWrapper ( clazz . getComponentType ( ) ) ) ; }
check if the given class represents an array of primitive wrappers , i . e . boolean , byte , character , short , integer , long , float , or double .
