1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
/*
* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 8025113
* @author sogoel
* @summary Test shadowing of resource variable
*/
/*
* "...a variable declared in a resource specification
* may be shadowed (6.3.1) anywhere inside a class declaration nested
* within the Block of the try."
*/
public class ResourceShadow {
static final String str = "asdf"; //this is okay
/**
* Resource variable shadows switch and case variables
*/
String test1() {
String ret = null;
switch (str) {
case str: //this is okay
try (SilentCloseable str = new SilentCloseable()) {
SilentCloseable tr = new SilentCloseable(str);
ret = str.getClass().getSimpleName();
}
break;
default:
ret = "";
}
return ret;
}
/**
* Resource variable may be shadowed (6.3.1) anywhere inside a class
* declaration nested within the Block of the try
*/
String test2() {
String ret = null;
try (SilentCloseable str = new SilentCloseable()) {
class temp {
String str = "I am not a SilentCloseable";
public void printSTR() {
System.out.println(str);
}
public String getSTR() {
return str;
}
}
temp tmp = new temp();
SilentCloseable tr = new SilentCloseable(tmp.getSTR());
ret = tr.getMsg();
}
return ret;
}
public static void main(String... args) {
ResourceShadow t = new ResourceShadow();
if (t.test1().compareTo("SilentCloseable") != 0) {
throw new RuntimeException("FAIL-test1");
}
if (t.test2().compareTo("I am not a SilentCloseable") != 0) {
throw new RuntimeException("FAIL-test2");
}
}
}
class SilentCloseable implements AutoCloseable {
SilentCloseable testres = null;
String msg = "default";
@Override
public void close() {
}
public SilentCloseable() {
}
public SilentCloseable(String s) {
msg = s;
}
public SilentCloseable(SilentCloseable tr) {
testres = tr;
}
public String getMsg() {
return msg;
}
}
|
