test/hotspot/jtreg/runtime/sealedClasses/OverrideSealedTest.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * version 2 for more details (a copy is included in the LICENSE file that
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 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 */

/*
 * @test
 * @bug 8225056
 */

// Test that a method in a sealed class or interface can be overridden.
public class OverrideSealedTest {

    sealed class Rectangle permits Square {
        public String draw() { return "rectangle"; }
    }

    final class Square extends Rectangle {
        public String draw() { return "square"; }
    }

    Rectangle r = new Rectangle();
    Rectangle rs = new Square();
    Square s = new Square();


    public sealed interface Shape permits Circle {
        default String name() { return "shape"; }
    }

    final class Circle implements Shape {
        public String name() { return "circle"; }
    }

    Shape sc = new Circle();
    Circle c = new Circle();


    public static void main(String... args) {
        OverrideSealedTest ost = new OverrideSealedTest();
        if (ost.r.draw() != "rectangle")
            throw new RuntimeException("Bad value returned by draw(): " + ost.r.draw());
        if (ost.rs.draw() != "square")
            throw new RuntimeException("Bad value returned by draw(): " + ost.rs.draw());
        if (ost.s.draw() != "square")
            throw new RuntimeException("Bad value returned by draw(): " + ost.s.draw());

        if (ost.sc.name() != "circle")
            throw new RuntimeException("Bad value returned by name(): " + ost.sc.name());
        if (ost.c.name() != "circle")
            throw new RuntimeException("Bad value returned by name(): " + ost.c.name());
    }
}