de.unkrig.commons.util

Class Enums

java.lang.Object

de.unkrig.commons.util.Enums

public final class Enums
extends Object

Various enum-related utility methods.

Method Summary

Modifier and Type	Method and Description
static <E extends Enum<E>> EnumSet<E>	enumSetFromString(String s, Class<E> elementType) Creates an EnumSet from the given string.
static Collection<Integer>	ordinals(Collection<? extends Enum<?>> enumSet)
static <E extends Enum<E>> E	valueOf(String name, Class<E> enumType) Returns the enum constant of the enumType with the specified name.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

ordinals

public static Collection<Integer> ordinals(Collection<? extends Enum<?>> enumSet)

Returns:

The ordinals of all members of the enumSet

enumSetFromString

public static <E extends Enum<E>> EnumSet<E> enumSetFromString(String s,
                                                               Class<E> elementType)

Creates an EnumSet from the given string. The string must have one of the following formats:

(Empty)

'[]'

Empty enum set

enum-constant

Enum set with one element

'[' enum-constant { ',' enum-constant } ']'

Enum set with one or more elements

enum-constant := java-identifier-start { java-identifier-part }

Returns:

A (mutable) EnumSet

valueOf

public static <E extends Enum<E>> E valueOf(String name,
                                            Class<E> enumType)

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

Returns:

The enum constant with the specified name

Throws:

IllegalArgumentException - The enumType has no constant with the specified name