The valueOf() method of an enum type allows you to get an enum constant that the value corresponds to the specified string. When we pass a string that not available in the enum an exception will be thrown.

package org.kodejava.example.fundamental;

enum Day {
    SUNDAY, MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY
}

public class EnumValueOfTest {
    public static void main(String[] args) {
        // Using valueOf() method we can get an enum constant whose
        // value corresponds to the string passed as the parameter.
        Day day = Day.valueOf("SATURDAY");
        System.out.println("Day = " + day);
        day = Day.valueOf("WEDNESDAY");
        System.out.println("Day = " + day);

        try {
            // The following line will produce an exception because the
            // enum type does not contains a constant named JANUARY.
            day = Day.valueOf("JANUARY");
            System.out.println("Day = " + day);
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        }
    }
}

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Wayan Saryada

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I am a programmer, a runner, a recreational diver, currently live in the island of Bali, Indonesia. Mostly programming in Java, Spring Framework, Hibernate / JPA. You can support my works by donating here. Thank you 🥳

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