MailingOptions.java

package com.bookstore.domain;


import static java.util.stream.Stream.of;

public enum MailingOptions {

    Weekly_Newsletter(
            "Weekly newsletter--New books," +
                    " updates, news, and special offers"),
    Deal_Of_the_Day(
            "Deal of the Day--These amazing " +
                    "special offers last just 24 hours!"),
    Both("Both"),
    No_Promotional_Mailers(
            "No promotional mailers. I will still" +
                    " receive updates on my MEAPs and other books."),
    Keep_Me(
            "Keep me on the lists I'm already on.");

    private final String string;

    MailingOptions(String string) {
        this.string = string;
    }

    @Override
    public String toString() {
        return string;
    }

    /**
     * This method filters the enum constants using the string and returns the first
     * matching constant.
     *
     * @param string the string value
     * @return enum with the string value
     */
    public static MailingOptions from(String string) {
        return of(values())
                .filter(
                        (o) -> string.equals(o.string))
                .findFirst()
                .get();
    }
}