Java Utililty Methods EnumSet Usage

List of utility methods to do EnumSet Usage

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Description

The list of methods to do EnumSet Usage are organized into topic(s).

Method

TnextEnum(T ce)
next Enum 
EnumSet valList = EnumSet.allOf(ce.getClass());
int pLoc = ce.ordinal() + 1;
if (pLoc >= valList.size()) {
    pLoc = 0;
if (pLoc < 0 || pLoc >= valList.size()) {
    pLoc = 0;
int pos = 0;
for (Object g : valList) {
    if (pos == pLoc) {
        return (T) g;
    pos++;
return null;
Iterablepossibilities(Class enumClass)
possibilities 
EnumSet<ENUM> values = EnumSet.allOf(enumClass);
List<String> result = new ArrayList<>(values.size());
for (ENUM value : values) {
    result.add(value.toString());
return result;
TrotateEnum(T ce, boolean backwards, EnumSet ValidOptions)
rotate Enum 
do {
    if (backwards) {
        ce = prevEnum(ce);
    } else {
        ce = nextEnum(ce);
} while (!ValidOptions.contains(ce));
return ce;
...
EnumSetsetOnly(EnumSet theSet, E flag)
set Only 
theSet.clear();
theSet.add(flag);
return theSet;
TvalueOfIgnoreCase(String text, Class cls)
find enum value ignoring case 
T result = null;
for (T item : EnumSet.allOf(cls)) {
    if (item.name().equalsIgnoreCase(text)) {
        result = item;
        break;
return result;
...
TvalueOfOrNull(Class enumType, String name)
value Of Or Null 
if (name == null)
    return null;
for (T enumValue : EnumSet.allOf(enumType)) {
    if (enumValue.toString().equals(name))
        return enumValue;
return null;
TvalueOfOrNull(Class enumType, String name, boolean checkCase)
value Of Or Null 
if (name == null) {
    return null;
for (T enumValue : EnumSet.allOf(enumType)) {
    if (checkCase) {
        if (enumValue.toString().equals(name)) {
            return enumValue;
    } else {
        if (enumValue.toString().equalsIgnoreCase(name)) {
            return enumValue;
return null;