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 package test.java.util.LinkedHashMap; 24 25 import java.util.*; 26 27 /** 28 * @test 29 * @bug 8030016 30 * @summary computeIfAbsent would generate spurious access 31 */ 32 33 import java.util.*; 34 35 public class ComputeIfAbsentAccessOrder { main(String args[])36 public static void main(String args[]) throws Throwable { 37 LinkedHashMap<String,Object> map = new LinkedHashMap<>(2, 0.75f, true); 38 map.put("first", null); 39 map.put("second", null); 40 41 map.computeIfAbsent("first", l -> null); // should do nothing 42 43 String key = map.keySet().stream() 44 .findFirst() 45 .orElseThrow(() -> new RuntimeException("no value")); 46 if(!"first".equals(key)) { 47 throw new RuntimeException("not expected value " + "first" + "!=" + key); 48 } 49 } 50 } 51