1 /*
 2  * Copyright (c) 2007, 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  * @test
25  * @bug 6312358
26  * @summary Verify that an NPE is thrown by issueing Locale.getInstance() with
27  *      any argument being null.
28  * @modules java.base/java.util:open
29  */
30 
31 import java.lang.reflect.InvocationTargetException;
32 import java.lang.reflect.Method;
33 import java.util.Locale;
34 
35 public class bug6312358 {
36 
37 
38     public static void main(String[] args) throws Exception {
39 
40         try {
41             // Locale.getInstance is not directly accessible.
42             Method getInstanceMethod = Locale.class.getDeclaredMethod(
43                 "getInstance", String.class, String.class, String.class
44             );
45             getInstanceMethod.setAccessible(true);
46 
47             getInstanceMethod.invoke(null, "null", "GB", "");
48             try {
49                 getInstanceMethod.invoke(null, null, "GB", "");
50                 throw new RuntimeException("Should NPE with language set to null");
51             } catch (InvocationTargetException exc) {
52                 Throwable cause = exc.getCause();
53                 if (!(cause instanceof NullPointerException)) {
54                     throw new RuntimeException(cause+" is thrown with language set to null");
55                 }
56             }
57 
58             getInstanceMethod.invoke(null, "en", "null", "");
59             try {
60                 getInstanceMethod.invoke(null, "en", null, "");
61                 throw new RuntimeException("Should NPE with country set to null");
62             } catch (InvocationTargetException exc) {
63                 Throwable cause = exc.getCause();
64                 if (!(cause instanceof NullPointerException)) {
65                     throw new RuntimeException(cause+" is thrown with country set to null");
66                 }
67             }
68 
69             getInstanceMethod.invoke(null, "en", "GB", "null");
70             try {
71                 getInstanceMethod.invoke(null, "en", "GB", null);
72                 throw new RuntimeException("Should NPE with variant set to null");
73             } catch (InvocationTargetException exc) {
74                 Throwable cause = exc.getCause();
75                 if (!(cause instanceof NullPointerException)) {
76                     throw new RuntimeException(cause+" is thrown with variant set to null");
77                 }
78             }
79         } catch (java.lang.NoSuchMethodException exc) {
80             // method is not found.  consider it as a success
81         }
82     }
83 }