How can I check for a value in a Java Enumeration?

Question

I'm trying to figure out how to use enumerations in Java, and I don't get how to do this:

public enum animalSounds {
    CAT("meow"),
    DOG("Woof"),
    PIG("Oink"),

    public final String animalName;

    animalSounds(String noise) {
        this.animalName = noise
    }

}

What I'm trying to do, is pass in a string, and see if that string exists in the set of enumerables. So, I would pass in "Oink" and get back PIG, but if I pass in "Chirp", I would get some sort of error, as there is not enumeration value with "Chirp".

Answer 1

enum is not the best thing to do for what you are trying to do but you could try

private animalSounds getAnimal(String noise) {
    for(animalSounds a : animalSounds.values())
    {
        if(a.animalName.equals(noise))
        {
            return a;
        }
    }
    throw new IllegalArgumentException();
}

Answer 2

使用values（）方法-遍历不同类型，执行逻辑。

Answer 3

For a few, iterate through the values() ; for many, create a Map<String, AnimalSounds> , as suggested here .