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@Override annotation on interface implementation with source level 1.5 [message #1138992]

Tue, 15 October 2013 09:12

Eclipse User

Hi all,

My problem is the following: I need to work on a project that is managed by Maven and is being developed with an IDE other than Eclipse.
As a result there are Java classes that have @Override annotation on methods that implement interface methods.
With Java source level 1.5 (Maven default) this is not allowed, but seemingly it is not a problem for people/tools using javac to compile the sources.

With Eclipse I need to specify a Java compliance level of 1.6 in the project preferences. The drawback is that when I execute a "Maven->Update project" this setting is lost. Is there another way to get the JDT compiler behave like javac in this case?

Here is a sample class that I would like to compile with source level 1.5:

public class Test {
	interface A {
		void myMethod();
	}
	class B implements A {
		@Override
		public void myMethod() {
		}
	}
}

Best regards,
Csaba

Re: @Override annotation on interface implementation with source level 1.5 [message #1139101 is a reply to message #1138992]

Tue, 15 October 2013 10:38

Eclipse User

Don't try to force JDT compiler into incorrect behavior, at compliance level 1.5 this @Override is an error and must be reported as such.
Rather try to tell Maven that this is a 1.6 project using standard Maven mechanisms.
Edit: From there also "Maven->Update project" should pick up this information and configure JDT for 1.6 accordingly.

[Updated on: Tue, 15 October 2013 10:39] by Moderator

Re: @Override annotation on interface implementation with source level 1.5 [message #1140341 is a reply to message #1139101]

Wed, 16 October 2013 05:36

Eclipse User

I do not want JDT to do something illegal, I would like to ask it not to be more strict as javac is (starting with version 1.6) in this case.

Unfortunately I can not change the Maven settings - and the others will not do it just because I am working with Eclipse.

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