[5683] in java-interest
Re: Compiling enum interface
daemon@ATHENA.MIT.EDU (Greg Ewing)
Thu Feb 22 09:21:43 1996
Date: Thu, 22 Feb 1996 15:32:59 +1100
From: grege@optimation.com.au (Greg Ewing)
To: java-interest@java.sun.com
Cc: pc1@doc.ic.ac.uk
> From NewsGroup_comp-lang-java Thu Feb 22 08:22 EST 1996
> From: NewsGroup_comp-lang-java
> >From: "P. Carlier" <pc1@doc.ic.ac.uk>
> Subject: Compiling enum interface
> Date: 20 Feb 1996 18:47:32 GMT
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>
> I suppose the answer is easy (or the question stupid) but I don't understand.
>
> I have used an interface to define an enum type:
>
> public interface oid_type {
> public static final int dom_t = 1;
> public static final int obj_t = 2;
> }
>
> I have implemented it in:
>
> public class oid implements oid_type {
> oid_type oid_t;
> String addr;
>
> public oid(oid_type oid_t) {
> this.oid_t = oid_t;
> addr = new String("adresse de l'oid");
> }
>
> .. }
>
> and both compile but it fails when I compile the main :
>
> ..
> oid objId;
>
> objId = new oid(oid_type.dom_t);
>
> and the error message is :
> Main.java:8: No constructor matching oid(int) found in class oid.
> objId = new oid(oid_type.dom_t);
> ^
>
> Can anybody helps me ?
>
> Thank you
>
> Pierre Carlier
>
Pierre,
Do you realise that you are passing `oid_type.dom_t' into the constructor?
This is an int.
Try passing `oid_type' instead. You can then query it using `oid_type.dom_t'.
However since you have made `dom_t' and `obj_t' static, you can access them
directly from within class `oid' (without passing them into the constructor)
by using the call `Oid_type.dom_t' or `Oid_type.oid_t'.
Otherwise keep these variables non-static to do what you are after.
BTW your interface name should be capitalised (e.g. Oid_type not oid_type).
GREG
grege@optimation.com.au
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