1 /* 2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 @test 26 @bug 8004970 27 @summary Lambda serialization 28 */ 29 30 import java.io.*; 31 32 public class LambdaSerialization { 33 34 static int assertionCount = 0; 35 assertTrue(boolean cond)36 static void assertTrue(boolean cond) { 37 assertionCount++; 38 if (!cond) 39 throw new AssertionError(); 40 } 41 main(String[] args)42 public static void main(String[] args) throws Exception { 43 try { 44 // Write lambdas out 45 ByteArrayOutputStream baos = new ByteArrayOutputStream(); 46 ObjectOutput out = new ObjectOutputStream(baos); 47 48 write(out, z -> "[" + z + "]" ); 49 write(out, z -> z + z ); 50 write(out, z -> "blah" ); 51 out.flush(); 52 out.close(); 53 54 // Read them back 55 ByteArrayInputStream bais = 56 new ByteArrayInputStream(baos.toByteArray()); 57 ObjectInputStream in = new ObjectInputStream(bais); 58 readAssert(in, "[X]"); 59 readAssert(in, "XX"); 60 readAssert(in, "blah"); 61 in.close(); 62 } catch (IOException e) { 63 e.printStackTrace(); 64 throw e; 65 } 66 assertTrue(assertionCount == 3); 67 } 68 write(ObjectOutput out, LSI lamb)69 static void write(ObjectOutput out, LSI lamb) throws IOException { 70 out.writeObject(lamb); 71 } 72 readAssert(ObjectInputStream in, String expected)73 static void readAssert(ObjectInputStream in, String expected) throws IOException, ClassNotFoundException { 74 LSI ls = (LSI) in.readObject(); 75 String result = ls.convert("X"); 76 System.out.printf("Result: %s\n", result); 77 assertTrue(result.equals(expected)); 78 } 79 } 80 81 interface LSI extends Serializable { convert(String x)82 String convert(String x); 83 } 84