org.conqat.lib.commons.enums

Class EnumUtils

java.lang.Object

org.conqat.lib.commons.enums.EnumUtils

public class EnumUtils
extends java.lang.Object

Utility class for enumerations.

Constructor Summary

Constructors

Constructor and Description
EnumUtils()

Method Summary

Modifier and Type	Method and Description
static <T extends java.lang.Enum<T>> java.util.EnumSet<T>	mergeSets(java.util.EnumSet<T> set, T... values) Merges an EnumSet and a list of enum values into one EnumSet.
static <T extends java.lang.Enum<T>> java.lang.String[]	names(java.lang.Class<T> enumType) Returns an array containing the names of the enum element.
static <T extends java.lang.Enum<T>> T	valueOf(java.lang.Class<T> enumType, java.lang.String constantName) This works like Enum.valueOf(java.lang.Class, java.lang.String) but returns null if constant wasn't found instead of throwing an IllegalArgumentException.
static <T extends java.lang.Enum<T>> T	valueOfIgnoreCase(java.lang.Class<T> enumType, java.lang.String constantName) Works like valueOf(Class, String) but ignores case.

Methods inherited from class java.lang.Object

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

Constructor Detail

EnumUtils

public EnumUtils()

Method Detail

valueOf

public static <T extends java.lang.Enum<T>> T valueOf(java.lang.Class<T> enumType,
                                                      java.lang.String constantName)

This works like Enum.valueOf(java.lang.Class, java.lang.String) but returns null if constant wasn't found instead of throwing an IllegalArgumentException.

Parameters:

enumType - Enumeration class

constantName - name of the constant

Returns:

the matching constant or null if not found

valueOfIgnoreCase

public static <T extends java.lang.Enum<T>> T valueOfIgnoreCase(java.lang.Class<T> enumType,
                                                                java.lang.String constantName)

Works like valueOf(Class, String) but ignores case. Worst case runtime is O('number of constants in enum').

names

public static <T extends java.lang.Enum<T>> java.lang.String[] names(java.lang.Class<T> enumType)

Returns an array containing the names of the enum element. Ordering is same as element ordering in enum.

mergeSets

@SafeVarargs
public static <T extends java.lang.Enum<T>> java.util.EnumSet<T> mergeSets(java.util.EnumSet<T> set,
                                                                                        T... values)

Merges an EnumSet and a list of enum values into one EnumSet.