/* * Copyright (c) 2022, 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 8282080 * @summary Check that serializable lambdas referring to j.l.Object methods work. * @compile SerializableObjectMethods.java * @run main SerializableObjectMethods */ import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.io.Serializable; public class SerializableObjectMethods { interface I1 extends Serializable {} interface I2 extends I1 { @Override public int hashCode(); } interface F extends Serializable { R apply(T t); } public static void main(String[] args) throws Exception { new SerializableObjectMethods().run(); } void run() throws IOException, ClassNotFoundException { saveLoad((F) I1::hashCode).apply(new I1() {}); saveLoad((F) I2::hashCode).apply(new I2() {}); } F saveLoad(F value) throws IOException, ClassNotFoundException { ByteArrayOutputStream out = new ByteArrayOutputStream(); try ( ObjectOutputStream oos = new ObjectOutputStream(out)) { oos.writeObject(value); } try (ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(out.toByteArray()))) { return (F) ois.readObject(); } } }