jdk8-mips64-public/langtools: test/tools/javac/TryWithResources/ResourceShadow.java@683b3e7e05a7

     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  */

    24 /*

    25  * @test

    26  * @bug     8025113

    27  * @author  sogoel

    28  * @summary Test shadowing of resource variable

    29  */

    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 {

    38     static final String str = "asdf";  //this is okay

    40     /**

    41      * Resource variable shadows switch and case variables

    42      */

    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     }

    58     /**

    59      * Resource variable may be shadowed (6.3.1) anywhere inside a class

    60      * declaration nested within the Block of the try

    61      */

    62     String test2() {

    63         String ret = null;

    64         try (SilentCloseable str = new SilentCloseable()) {

    65             class temp {

    67                 String str = "I am not a SilentCloseable";

    69                 public void printSTR() {

    70                     System.out.println(str);

    71                 }

    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     }

    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 }

    95 class SilentCloseable implements AutoCloseable {

    97     SilentCloseable testres = null;

    98     String msg = "default";

   100     @Override

   101     public void close() {

   102     }

   104     public SilentCloseable() {

   105     }

   107     public SilentCloseable(String s) {

   108         msg = s;

   109     }

   111     public SilentCloseable(SilentCloseable tr) {

   112         testres = tr;

   113     }

   115     public String getMsg() {

   116         return msg;

   117     }

   118 }

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