How to get an enum value from a string value in Java?

Question

Say I have an enum which is just

public enum Blah {
    A, B, C, D
}

and I would like to find the enum value of a string, for example

Answer 1

Here's a method that can do it for any Enum, and is case insensitive.

/** 
 * Finds the value of the given enumeration by name, case-insensitive. 
 * Throws an IllegalArgumentException if no match is found.  
 **/
public static > T valueOfIgnoreCase(
        Class enumeration, String name) {

    for (T enumValue : enumeration.getEnumConstants()) {
        if (enumValue.name().equalsIgnoreCase(name)) {
            return enumValue;
        }
    }

    throw new IllegalArgumentException(String.format(
        "There is no value with name '%s' in Enum %s",
        name, enumeration.getName()
    ));
}