CastFail11.java

/*
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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * @test
 * @bug 4916607
 * @summary Test casts (legal, warning, and errors)
 * @author gafter
 *
 * @compile/fail  CastFail11.java
 */

import java.util.*;

class CastTest {

    // --- Transferring parameters via supertypes ---

    private interface CA<T> { }
    private interface CB<T> extends CA<T> { }
    private interface CC<T> extends CA<T> { }

    private class CD<T> implements CB<T> { }
    private interface CE<T> extends CC<T> { }

    private interface CF<S> { }
    private interface CG<T> { }
    private class CH<S, T> implements CF<S>, CG<T> { }
    private interface CI<S> extends CF<S> { }
    private interface CJ<T> extends CG<T> { }
    private interface CK<S, T> extends CI<S>, CJ<T> { }

    private void supertypeParameterTransfer() {
        Object o;
        CD<?> cd = (CE<?>) null; // <<fail 11>>
    }

}