Created
April 16, 2016 17:15
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Convert a String to an Enumeration (if possible).
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| public class EnumUtils { | |
| public static <T extends Enum<T>> T getEnumFromString(final Class<T> enumClass,final String value) { | |
| if(enumClass == null){ | |
| throw new IllegalArgumentException("enumClass cannot be null"); | |
| } | |
| for (final Enum<?> enumValue : enumClass.getEnumConstants()) { | |
| if (enumValue.toString().equalsIgnoreCase(value)) { | |
| return (T) enumValue; | |
| } | |
| } | |
| //Construct an error message that indicates all possible values for the enum. | |
| final StringBuilder errorMessage = new StringBuilder(); | |
| boolean bFirstTime = true; | |
| for (final Enum<?> enumValue : enumClass.getEnumConstants()) { | |
| errorMessage.append(bFirstTime ? "" : ", ").append(enumValue); | |
| bFirstTime = false; | |
| } | |
| throw new IllegalArgumentException(value + " is invalid value. Supported values are " + errorMessage); | |
| } | |
| } |
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