1 /* 2 * Copyright (c) 2011, 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 8003280 27 * @summary Add lambda tests 28 * check that SAM conversion handles covarinat return types correctly 29 * @author Peter Levart 30 * @author Maurizio Cimadamore 31 * @run main LambdaConv08 32 */ 33 34 public class LambdaConv08 { 35 36 static int assertionCount = 0; 37 assertTrue(boolean cond)38 static void assertTrue(boolean cond) { 39 assertionCount++; 40 if (!cond) 41 throw new AssertionError(); 42 } 43 invoke()44 public interface ObjectF { Object invoke(); } invoke()45 public interface StringF extends ObjectF { String invoke(); } 46 call(StringF stringFunc)47 public static void call(StringF stringFunc) { 48 assertTrue(true); 49 } 50 call(ObjectF objectFunc)51 public static void call(ObjectF objectFunc) { } 52 main(String[] args)53 public static void main(String[] args) { 54 call(()-> "Hello"); 55 assertTrue(assertionCount == 1); 56 } 57 } 58