InvalidIntfCast.java

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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * @test
 * @bug 4023359 4948130
 * @summary The compiler should detect an invalid cast between interfaces.
 * @author turnidge
 *
 * @compile InvalidIntfCast.java
 */

interface I {
    void method();
}

interface J {
    int method();
}

public class InvalidIntfCast {
    public static void main(String[] args) {
        I i = null;
        J j = (J) i;
    }
}