Get Items from Enum as String

I have this Enum Structure:

public enum PurchaseOrderStatus {
    IN_REVIEW("in_review"),
    CANCELED("canceled"),
    DECLINED("declined"),
    WAITING_REVIEW("waiting_review"),
    IN_TRANSIT("in_transit"),
    COMPLETED("completed");

    private String text;

    PurchaseOrderStatus(String text) {
        this.text = text;
    }

    public String getText() {
        return this.text;
    }

    public static Optional<PurchaseOrderStatus> fromText(String text) {
        return Arrays.stream(values())
                .filter(bl -> bl.text.equalsIgnoreCase(text))
                .findFirst();
    }
}

How I can get item as String? When I try PurchaseOrderStatus.IN_REVIEW.getText() I get error Attribute value must be constant.

PurchaseOrderStatus.IN_REVIEW.getText() is it.

That error is not related to 'how to get items from enum as string'. it is related to the fact that you can only use constants in annotation options.

You must be trying to do this in your code:

@Foobar(PurchaseOrderStatus.IN_REVIEW.getText()) - you can't do that.

If it's your own annotation, note that annotation 'fields' can be enum-typed. So where you currently have:

public @interface Foobar {
    String value() default "hello";
}

make that:

public @interface Foobar {
    PurchaseOrderStatus value() default PurchaseOrderStatus.IN_REVIEW;
}

If you can't change the definition of the annotation, well, this won't work, and there really isn't any workaround, you're going to have to 'hardcode' the string someplace.

Note that the entire design of your enum is a bit wonky; you could have just as well written:

public enum PurchaseOrderStatus {
    IN_REVIEW, CANCELED, DECLINED, WAITING_REVIEW, IN_TRANSIT, COMPLETED;

    public String getText() {
        return name().toLowerCase();
    }
}

Your code should work fine; however, I would recommend this change (since it guaranteed that text never changes).

Make

private String text;

into

private final String text;