javac vs. eclipse: another try

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(this time with attachments)

Hello all,

a while ago I reported I had problems getting a project to compile from
the command line which eclipse compiles fine. There seem to be some
differences on how they handle generics (see
http://groups.google.com/group/comp.lang.java.programmer/browse_thread/thread/faca2633a3adeef4/ce48585945d47a0f?#ce48585945d47a0f)

Now I trimmed down my problem to the first error I encounter and want
your advice on how I can solve this.

So I would like to get this running with javac, but preferable also get
to know which of both is wrong, so I can file a bug for them.

So here is the problem: I attached three files: ClosureUtils invokes
ChainedClosure.getInstance(Closure<? super I> closure1, Closure<? super
I> closure2).

javac gives following error:

hendrik@lichtenstein:~/workspace/test Java> javac -classpath
/home/hendrik/workspace/test\ Java/ collections/ClosureUtils.java
collections/ClosureUtils.java:8: <I>getInstance(collections.Closure<?
super I>,collections.Closure<? super I>) in
collections.functors.ChainedClosure cannot be applied to
(collections.Closure<capture of ? super I>,collections.Closure<capture
of ? super I>)
        return ChainedClosure.getInstance(closure1, closure2);
                             ^
1 error

TIA, H.
- --
Hendrik Maryns
http://tcl.sfs.uni-tuebingen.de/~hendrik/
==================
http://aouw.org
Ask smart questions, get good answers:
http://www.catb.org/~esr/faqs/smart-questions.html
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--
Hendrik Maryns
http://tcl.sfs.uni-tuebingen.de/~hendrik/
==================
http://aouw.org
Ask smart questions, get good answers:
http://www.catb.org/~esr/faqs/smart-questions.html

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Content-Type: text/x-java;
 name="ChainedClosure.java"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline;
 filename="ChainedClosure.java"

package closure;

import java.io.Serializable;

public class ChainedClosure<I> implements Closure<I>, Serializable {

    private final Closure<? super I>[] iClosures;

    @SuppressWarnings("unchecked")
    public static <I> Closure<I> getInstance(Closure<? super I> closure1, Closure<? super I> closure2) {
        if (closure1 == null || closure2 == null) {
            throw new IllegalArgumentException("Closures must not be null");
        }
        Closure<I>[] closures = new Closure[] { closure1, closure2 };
        return new ChainedClosure<I>(closures);
    }

    public ChainedClosure(Closure<? super I>[] closures) {
        super();
        iClosures = closures;
    }

    public void execute(I input) {
        for (int i = 0; i < iClosures.length; i++) {
            iClosures[i].execute(input);
        }
    }

}

--------------030201070802050009030108
Content-Type: text/x-java;
 name="Closure.java"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline;
 filename="Closure.java"

package closure;

public interface Closure<I> {

    public void execute(I input);

}

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Content-Type: text/x-java;
 name="ClosureUtils.java"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline;
 filename="ClosureUtils.java"

package closure;

public class ClosureUtils {

    public static <I> Closure<I> chainedClosure(Closure<? super I> closure1, Closure<? super I> closure2) {
        return ChainedClosure.getInstance(closure1, closure2);
    }

}

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