Java Utililty Methods Reflection Enum

List of utility methods to do Reflection Enum

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Reflection Enum

Description

The list of methods to do Reflection Enum are organized into topic(s).

Method

List getEnumConstants(Class c)
Returns all Enum Constants in an Enum

return Arrays.asList(c.getEnumConstants());

String[] getEnumNames(Class> e)
get Enum Names

return Arrays.toString(e.getEnumConstants()).replaceAll("\\[|]", "").split(", ");

List getEnumValues(Class type)
It will parse the given Class as Enum , returns the list of values of given Enum

if (isEnum(type)) {
 Class<Enum> enumClass = (Class<Enum>) type;
 List<String> values = new ArrayList<>(enumClass.getEnumConstants().length);
 for (Enum anEnum : enumClass.getEnumConstants()) {
 values.add(anEnum.name());
 return values;
} else {
...

Map getOptionsFromEnum(Class> enumClass)
Get the label and value for select options of forms from the given enum class.

Map<String, String> map = new HashMap<String, String>();
Enum<?>[] enumConstants = enumClass.getEnumConstants();
for (Enum<?> enumConstant : enumConstants) {
 map.put(enumConstant.toString(), getLabel(enumConstant.toString()));
return map;

boolean isLegalEnum(Class clazz, Object enuValue)
is Legal Enum

boolean result = false;
if (null == clazz || null == enuValue) {
 return result;
if (clazz.isEnum()) {
 Enum[] enums = (Enum[]) clazz.getEnumConstants();
 if (!isEmpty(enums)) {
 if (enuValue instanceof Enum) {
...

Type toEnum(Class e, String s)
to Enum

try {
 return Type.valueOf(e, s);
} catch (IllegalArgumentException ex) {
 return null;
} catch (NullPointerException ex) {
 return null;

String[] toStrings(Class clenum)
to Strings

synchronized (strings) {
 String[] result = strings.get(clenum);
 if (result == null) {
 try {
 Enum<?>[] values = (Enum<?>[]) clenum.getMethod("values").invoke(null);
 result = new String[values.length];
 for (int i = 0; i < values.length; i++) {
 result[i] = values[i].toString();
...