1 /* 2 * Copyright (c) 2010, 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 8025113 27 * @author sogoel 28 * @summary Test shadowing of resource variable 29 */ 30 31 /* 32 * "...a variable declared in a resource specification 33 * may be shadowed (6.3.1) anywhere inside a class declaration nested 34 * within the Block of the try." 35 */ 36 public class ResourceShadow { 37 38 static final String str = "asdf"; //this is okay 39 40 /** 41 * Resource variable shadows switch and case variables 42 */ test1()43 String test1() { 44 String ret = null; 45 switch (str) { 46 case str: //this is okay 47 try (SilentCloseable str = new SilentCloseable()) { 48 SilentCloseable tr = new SilentCloseable(str); 49 ret = str.getClass().getSimpleName(); 50 } 51 break; 52 default: 53 ret = ""; 54 } 55 return ret; 56 } 57 58 /** 59 * Resource variable may be shadowed (6.3.1) anywhere inside a class 60 * declaration nested within the Block of the try 61 */ test2()62 String test2() { 63 String ret = null; 64 try (SilentCloseable str = new SilentCloseable()) { 65 class temp { 66 67 String str = "I am not a SilentCloseable"; 68 69 public void printSTR() { 70 System.out.println(str); 71 } 72 73 public String getSTR() { 74 return str; 75 } 76 } 77 temp tmp = new temp(); 78 SilentCloseable tr = new SilentCloseable(tmp.getSTR()); 79 ret = tr.getMsg(); 80 } 81 return ret; 82 } 83 main(String... args)84 public static void main(String... args) { 85 ResourceShadow t = new ResourceShadow(); 86 if (t.test1().compareTo("SilentCloseable") != 0) { 87 throw new RuntimeException("FAIL-test1"); 88 } 89 if (t.test2().compareTo("I am not a SilentCloseable") != 0) { 90 throw new RuntimeException("FAIL-test2"); 91 } 92 } 93 } 94 95 class SilentCloseable implements AutoCloseable { 96 97 SilentCloseable testres = null; 98 String msg = "default"; 99 100 @Override close()101 public void close() { 102 } 103 SilentCloseable()104 public SilentCloseable() { 105 } 106 SilentCloseable(String s)107 public SilentCloseable(String s) { 108 msg = s; 109 } 110 SilentCloseable(SilentCloseable tr)111 public SilentCloseable(SilentCloseable tr) { 112 testres = tr; 113 } 114 getMsg()115 public String getMsg() { 116 return msg; 117 } 118 } 119 120