src/main/java/org/jboss/util/Classes.java
public static boolean isPrimitiveWrapper(final Class type)
   {
      for (int i = 0; i < PRIMITIVE_WRAPPER_MAP.length; i += 2)
      {
         if (type.equals(PRIMITIVE_WRAPPER_MAP[i + 1]))
         {
            return true;
         }
      }

      return false;
   }
public static boolean isPrimitiveWrapper(final Class type)
   {
      for (int i = 0; i < PRIMITIVE_WRAPPER_MAP.length; i += 2)
      {
         if (type.equals(PRIMITIVE_WRAPPER_MAP[i + 1]))
         {
            return true;
         }
      }

      return false;
   }
Check if the given class is a primitive wrapper class.

@param type    Class to check.
@return        True if the class is a primitive wrapper.