Method Detail

• allPrimitiveTypes

  public static Set<Class<?>> allPrimitiveTypes()

  Returns an immutable set of all nine primitive types (including void). Note that a simpler way to test whether a Class instance is a member of this set is to call Class.isPrimitive().

  Since:

  3.0

• allWrapperTypes

  public static Set<Class<?>> allWrapperTypes()

  Returns an immutable set of all nine primitive-wrapper types (including Void).

  Since:

  3.0

• isWrapperType

  public static boolean isWrapperType(Class<?> type)

  Returns true if type is one of the nine primitive-wrapper types, such as Integer.

  See Also:

  Class.isPrimitive()

• wrap

  public static <T> Class<T> wrap(Class<T> type)

  Returns the corresponding wrapper type of type if it is a primitive type; otherwise returns type itself. Idempotent.

       wrap(int.class) == Integer.class
       wrap(Integer.class) == Integer.class
       wrap(String.class) == String.class
   

• unwrap

  public static <T> Class<T> unwrap(Class<T> type)

  Returns the corresponding primitive type of type if it is a wrapper type; otherwise returns type itself. Idempotent.

       unwrap(Integer.class) == int.class
       unwrap(int.class) == int.class
       unwrap(String.class) == String.class