Description Hendrik Maryns 2006-09-25 04:43:11 EDT

Given the following classes, javac reports a Symbol not found error.  Eclipse compiles fine.  I am unsure which of both is wrong.

=== file Closure.java ===
package closure;
public interface Closure<I> {

    public void execute(I input);

}
=== Closure.java ===

=== ChainedClosure.java ===
package closure;

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

    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);
        }
    }

}
=== ChainedClosure.java ===

=== 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);
    }

}
=== ClosureUtils.java ===

hendrik@lichtenstein:~/workspace/test Java> javac -classpath . closure/ClosureUtils.java closure/ClosureUtils.java:6: <I>getInstance(closure.Closure<? super I>,closure.Closure<? super I>) in closure.ChainedClosure cannot be applied to (closure.Closure<capture of ? super I>,closure.Closure<capture of ? super I>)
        return ChainedClosure.getInstance(closure1, closure2);
                             ^
1 error