How to iterate on the field of an enum in Java?

Question

I have this Java enum:

public enum ConnectionParameter {
    state,
    host,
    port,
    secure,
    username,
    password
}

that contains the fields of an XML file on which I have to work using XPATH (but this is not important at this time)

I have to iterate on all this enum fields to do an operation for each one.

How can I do it?

Tnx

Andrea

`ConnectionParameter.values()` returns an array of all the `enum` values declared in that `enum`. — Sotirios Delimanolis, Dec 16 '13 at 16:40
Are you using an IDE? Have you tried using its autocomplete? — Amir Pashazadeh, Dec 16 '13 at 16:42

score 6 · Accepted Answer · answered Dec 16 '13 at 16:41

6

for(ConnectionParameter item : ConnectionParameter.values())

answered Dec 16 '13 at 16:41

Paul Lo

score 2 · Answer 2 · answered Dec 16 '13 at 16:41

2

You can use ConnectionParameter.values() that returns you an array with all the constants defined in the enum. Example:

for (ConnectionParameter c :ConnectionParameter.values()) {
   System.out.println(c.printableName());
}

More info:

answered Dec 16 '13 at 16:41

Konstantin Yovkov

score 1 · Answer 3 · answered Dec 16 '13 at 16:53

1

You can use the values() method like this:

for (ConnectionParameter connectionParameter : ConnectionParameter.values()) {
   // do somethign with `connectionParameter` here
}

Every enum has this values() method.

answered Dec 16 '13 at 16:53

Adam Arold

3 Answers3