1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5  * This code is free software; you can redistribute it and/or modify it
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7  * published by the Free Software Foundation.
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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
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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
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22  */
23 
24 /* @test
25  * @bug 4431318
26  * @summary Verify that when serialVersionUID is declared with a type other
27  *          than long, values that can be promoted to long will be used, and
28  *          those that can't be will be ignored (but will not result in
29  *          unchecked exceptions).
30  */
31 
32 import java.io.*;
33 
34 class Z implements Serializable {
35     @SuppressWarnings("serial") /* Incorrect declarations are being tested */
36     private static final boolean serialVersionUID = false;
37 }
38 
39 class B implements Serializable {
40     @SuppressWarnings("serial") /* Incorrect declarations are being tested */
41     private static final byte serialVersionUID = 5;
42 }
43 
44 class C implements Serializable {
45     @SuppressWarnings("serial") /* Incorrect declarations are being tested */
46     private static final char serialVersionUID = 5;
47 }
48 
49 class S implements Serializable {
50     @SuppressWarnings("serial") /* Incorrect declarations are being tested */
51     private static final short serialVersionUID = 5;
52 }
53 
54 class I implements Serializable {
55     @SuppressWarnings("serial") /* Incorrect declarations are being tested */
56     private static final int serialVersionUID = 5;
57 }
58 
59 class F implements Serializable {
60     @SuppressWarnings("serial") /* Incorrect declarations are being tested */
61     private static final float serialVersionUID = 5.0F;
62 }
63 
64 class D implements Serializable {
65     @SuppressWarnings("serial") /* Incorrect declarations are being tested */
66     private static final double serialVersionUID = 5.0;
67 }
68 
69 class L implements Serializable {
70     @SuppressWarnings("serial") /* Incorrect declarations are being tested */
71     private static final Object serialVersionUID = "5";
72 }
73 
74 
75 public class BadSerialVersionUID {
main(String[] args)76     public static void main(String[] args) throws Exception {
77         Class<?>[] ignore = { Z.class, F.class, D.class, L.class };
78         Class<?>[] convert = { B.class, C.class, S.class, I.class };
79 
80         for (int i = 0; i < ignore.length; i++) {
81             ObjectStreamClass.lookup(ignore[i]).getSerialVersionUID();
82         }
83         for (int i = 0; i < convert.length; i++) {
84             ObjectStreamClass desc = ObjectStreamClass.lookup(convert[i]);
85             if (desc.getSerialVersionUID() != 5L) {
86                 throw new Error();
87             }
88         }
89     }
90 }
91