jdk-24/test/hotspot/jtreg/runtime/sealedClasses/OverrideSealedTest.java
Vicente Romero 0fa9223f34 8260517: implement Sealed Classes as a standard feature in Java
Co-authored-by: Harold Seigel <hseigel@openjdk.org>
Co-authored-by: Vicente Romero <vromero@openjdk.org>
Reviewed-by: dholmes, mcimadamore, jlahoda
2021-05-20 09:11:08 +00:00

72 lines
2.5 KiB
Java

/*
* Copyright (c) 2020, 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @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());
}
}