jebl.util

Enum MaybeBoolean

java.lang.Object

java.lang.Enum<MaybeBoolean>

jebl.util.MaybeBoolean

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<MaybeBoolean>

public enum MaybeBoolean
extends java.lang.Enum<MaybeBoolean>

A tri-state boolean value that can also be "Maybe" besides True and False.

Version:

$Id: MaybeBoolean.java 744 2007-07-30 02:57:11Z twobeers $

Created on 30/07/2007 14:15:09

Author:

Tobias Thierer

Enum Constant Summary

Enum Constants

Enum Constant and Description
False
Maybe
True

Method Summary

Methods

Modifier and Type	Method and Description
static java.lang.Boolean	booleanValue(MaybeBoolean b)
static MaybeBoolean	consensus(boolean a, boolean b)
static MaybeBoolean	valueOf(boolean b)
static MaybeBoolean	valueOf(java.lang.String name) Returns the enum constant of this type with the specified name.
static MaybeBoolean[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

compareTo, equals, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

True

public static final MaybeBoolean True

False

public static final MaybeBoolean False

Maybe

public static final MaybeBoolean Maybe

Method Detail

values

public static MaybeBoolean[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (MaybeBoolean c : MaybeBoolean.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static MaybeBoolean valueOf(java.lang.String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

java.lang.IllegalArgumentException - if this enum type has no constant with the specified name

java.lang.NullPointerException - if the argument is null

valueOf

public static MaybeBoolean valueOf(boolean b)

booleanValue

public static java.lang.Boolean booleanValue(MaybeBoolean b)

consensus

public static MaybeBoolean consensus(boolean a,
                     boolean b)