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Mozbi
Mozbi

Reputation: 1479

Getting String value from enum in Java

I have a enum defined like this and I would like to be able to obtain the strings for the individual statuses. How should I write such a method?

I can get the int values of the statuses but would like the option of getting the string values from the ints as well.

public enum Status {
    PAUSE(0),
    START(1),
    STOP(2);

    private final int value;

    private Status(int value) {
        this.value = value
    }

    public int getValue() {
        return value;
    }
}

Upvotes: 97

Views: 301624

Answers (6)

PaxLightning
PaxLightning

Reputation: 75

You can use custom values() method:

public enum SortType { Scored, Lasted;

     public int value(){
         return this == Lasted ? 1:0;
     }
}

Upvotes: 0

Biswajit Karmakar
Biswajit Karmakar

Reputation: 9907

Use default method name() as given bellows

public enum Category {
        ONE("one"),
        TWO ("two"),
        THREE("three");

        private final String name;

        Category(String s) {
            name = s;
        }

    }

public class Main {
    public static void main(String[] args) throws Exception {
        System.out.println(Category.ONE.name());
    }
}

Upvotes: 11

J.Stange
J.Stange

Reputation: 518

I believe enum have a .name() in its API, pretty simple to use like this example:

private int security;
public String security(){ return Security.values()[security].name(); }
public void setSecurity(int security){ this.security = security; }

    private enum Security {
            low,
            high
    }

With this you can simply call 

yourObject.security()

and it returns high/low as String, in this example

Upvotes: 0

M Abbas
M Abbas

Reputation: 6479

You can add this method to your Status enum:

 public static String getStringValueFromInt(int i) {
     for (Status status : Status.values()) {
         if (status.getValue() == i) {
             return status.toString();
         }
     }
     // throw an IllegalArgumentException or return null
     throw new IllegalArgumentException("the given number doesn't match any Status.");
 }

public static void main(String[] args) {
    System.out.println(Status.getStringValueFromInt(1)); // OUTPUT: START
}

Upvotes: 9

Juvanis
Juvanis

Reputation: 25950

You can use values() method:

For instance Status.values()[0] will return PAUSE in your case, if you print it, toString() will be called and "PAUSE" will be printed.

Upvotes: 50

harsh
harsh

Reputation: 7692

if status is of type Status enum, status.name() will give you its defined name.

Upvotes: 132

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