Can somebody explain how does this program regarding enum works in java?

Question

Here's the code :

enum Status {

    STATUS_OPEN(10),
    STATUS_STARTED(11),
    STATUS_INPROGRESS(12);

    private final int status;

    Status(int aStatus) {
        this.status = aStatus;
    }

    public int getStatus() {
        return this.status;
    }

}

class StatusTest3 {

    public static void main(String[] args) {

        for (Status stat : Status.values()) {
            System.out.println(stat + " value is " + stat.getStatus());
        }
    }
}

What does Status.values() return ?

and the output is :

STATUS_OPEN value is 10
STATUS_STARTED value is 11
STATUS_INPROGRESS value is 12

And your reason why it shouldn't have worked is?! – Rahul Oct 07 '13 at 06:14 — Rahul, Oct 07 '13 at 06:14
you need to study and work a lot more with enums – Akhil Jain Dec 16 '13 at 17:21 — Akhil Jain, Dec 16 '13 at 17:21

score 1 · Answer 1 · answered Oct 07 '13 at 06:11

1

http://docs.oracle.com/javase/7/docs/api/java/lang/Enum.html

All the constants of an enum type can be obtained by calling the implicit public static T[] values() method of that type.

answered Oct 07 '13 at 06:11

Suresh Atta

120,458
37
198
307

but how did it access the values in the brackets ? – Ajinkya Oct 07 '13 at 06:29
@AjZ You need to do some work around. Like this http://stackoverflow.com/questions/11047756/getting-enum-associated-with-int-value – Suresh Atta Oct 07 '13 at 06:34

score 1 · Answer 2 · answered Oct 07 '13 at 06:13

1

Status.values() : will return an array containing the constants of this enum type, in the order they're declared

Read JLS for more: http://docs.oracle.com/javase/specs/jls/se7/html/jls-8.html#jls-8.9.2

answered Oct 07 '13 at 06:13

Juned Ahsan

67,789
12
98
136

Can somebody explain how does this program regarding enum works in java?

2 Answers2