/* * 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()); } }