Hi!

Have enum with inner fields, kind of map.

Now I need to get enum by it's inner field.

Wrote this:

package test;

/**
 * Test enum to test enum =)
 */
public enum TestEnum {
    ONE(1), TWO(2), THREE(3);

    private int number;

    TestEnum(int number) {
        this.number = number;
    }      

    public TestEnum findByKey(int i) {
        TestEnum[] testEnums = TestEnum.values();
        for (TestEnum testEnum : testEnums) {
            if (testEnum.number == i) {
                return testEnum;
            }
        }
        return null;
    }
}

But it's not very efficient to look up through all enums each time I need to find appropriate instance.

Is there any other way to do the same?