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How to get an enum value from a string value in Java?

Utpal Vishwas 741 21 Jul 2023

How to get an enum value from a string value in Java?

java javaclassstring
Updated 22 Jul 2023
Utpal Vishwas
Utpal Vishwas

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I am Utpal Vishwas from Uttar Pradesh. Have completed my B. Tech. course from MNNIT campus Prayagraj in 2022. I have good knowledge of computer networking.

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1 Answers

Aryan Kumar
Aryan Kumar 22 Jul 2023
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To get an enum value from a string value in Java, you can use the valueOf() method of the enum type. The valueOf() method takes a string as a parameter and returns the enum constant that has the same name as the string.

For example, the following code gets the enum value for the string "RED":

enum Color {
  RED, GREEN, BLUE
}

public class Main {

  public static void main(String[] args) {
    String colorString = "RED";
    Color color = Color.valueOf(colorString);

    System.out.println(color); // RED
  }
}

If the string does not match any of the enum constants, the valueOf() method will throw an IllegalArgumentException.

Here is an example of how to handle an IllegalArgumentException in Java:

enum Color {
  RED, GREEN, BLUE
}

public class Main {

  public static void main(String[] args) {
    String colorString = "YELLOW";
    Color color;

    try {
      color = Color.valueOf(colorString);
    } catch (IllegalArgumentException e) {
      System.out.println("The color '" + colorString + "' is not a valid color.");
    }

    System.out.println(color); // null
  }
}

As you can see, the valueOf() method is a convenient way to get an enum value from a string value. However, it is important to handle the IllegalArgumentException that it can throw.

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