util/Hashtable/IllegalLoadFactor.java

/*
 * Copyright (c) 1997, 1998, 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 4093817 4189594
   @summary Test for an illegalargumentexception on loadFactor
*/

import java.util.HashMap;
import java.util.HashSet;
import java.util.Hashtable;
import java.util.Map;
import java.util.Set;
import java.util.WeakHashMap;

/**
 * This class tests to see if creating a hash table with an
 * illegal value of loadFactor results in an IllegalArgumentException
 */
public class IllegalLoadFactor {

    public static void main(String[] args) throws Exception {
        boolean testSucceeded = false;
        try {
            // this should generate an IllegalArgumentException
            Hashtable bad1 = new Hashtable(100, -3);
        }
        catch (IllegalArgumentException e1) {
            testSucceeded = true;
        }
        if (!testSucceeded)
            throw new Exception("Hashtable, negative load factor");

        testSucceeded = false;
        try {
            // this should generate an IllegalArgumentException
            Hashtable bad1 = new Hashtable(100, Float.NaN);
        }
        catch (IllegalArgumentException e1) {
            testSucceeded = true;
        }
        if (!testSucceeded)
            throw new Exception("Hashtable, NaN load factor");

        testSucceeded = false;
        try {
            // this should generate an IllegalArgumentException
            HashMap bad1 = new HashMap(100, -3);
        }
        catch (IllegalArgumentException e1) {
            testSucceeded = true;
        }
        if (!testSucceeded)
            throw new Exception("HashMap, negative load factor");

        testSucceeded = false;
        try {
            // this should generate an IllegalArgumentException
            HashMap bad1 = new HashMap(100, Float.NaN);
        }
        catch (IllegalArgumentException e1) {
            testSucceeded = true;
        }
        if (!testSucceeded)
            throw new Exception("HashMap, NaN load factor");


        testSucceeded = false;
        try {
            // this should generate an IllegalArgumentException
            HashSet bad1 = new HashSet(100, -3);
        }
        catch (IllegalArgumentException e1) {
            testSucceeded = true;
        }
        if (!testSucceeded)
            throw new Exception("HashSet, negative load factor");

        testSucceeded = false;
        try {
            // this should generate an IllegalArgumentException
            HashSet bad1 = new HashSet(100, Float.NaN);
        }
        catch (IllegalArgumentException e1) {
            testSucceeded = true;
        }
        if (!testSucceeded)
            throw new Exception("HashSet, NaN load factor");

        testSucceeded = false;
        try {
            // this should generate an IllegalArgumentException
            WeakHashMap bad1 = new WeakHashMap(100, -3);
        }
        catch (IllegalArgumentException e1) {
            testSucceeded = true;
        }
        if (!testSucceeded)
            throw new Exception("WeakHashMap, negative load factor");

        testSucceeded = false;
        try {
            // this should generate an IllegalArgumentException
            WeakHashMap bad1 = new WeakHashMap(100, Float.NaN);
        }
        catch (IllegalArgumentException e1) {
            testSucceeded = true;
        }
        if (!testSucceeded)
            throw new Exception("WeakHashMap, NaN load factor");

        // Make sure that legal creates don't throw exceptions
        Map goodMap = new Hashtable(100, .69f);
        goodMap = new HashMap(100, .69f);
        Set goodSet = new HashSet(100, .69f);
        goodMap = new WeakHashMap(100, .69f);
    }
}
Revision:	1.8
Committed:	Mon Jan 8 03:12:03 2018 UTC (6 years, 4 months ago) by jsr166
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.7:	+6 -1 lines
Log Message:	organize imports
#	User	Rev	Content
1	jsr166	1.1	/*
2	jsr166	1.3	* Copyright (c) 1997, 1998, Oracle and/or its affiliates. All rights reserved.
3	jsr166	1.1	* 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	jsr166	1.3	* 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	jsr166	1.1	*/
23
24			/* @test
25			@bug 4093817 4189594
26			@summary Test for an illegalargumentexception on loadFactor
27			*/
28
29	jsr166	1.8	import java.util.HashMap;
30			import java.util.HashSet;
31			import java.util.Hashtable;
32			import java.util.Map;
33			import java.util.Set;
34			import java.util.WeakHashMap;
35	jsr166	1.1
36			/**
37			* This class tests to see if creating a hash table with an
38			* illegal value of loadFactor results in an IllegalArgumentException
39			*/
40			public class IllegalLoadFactor {
41
42	jsr166	1.7	public static void main(String[] args) throws Exception {
43	jsr166	1.6	boolean testSucceeded = false;
44			try {
45			// this should generate an IllegalArgumentException
46			Hashtable bad1 = new Hashtable(100, -3);
47			}
48			catch (IllegalArgumentException e1) {
49			testSucceeded = true;
50			}
51			if (!testSucceeded)
52			throw new Exception("Hashtable, negative load factor");
53
54			testSucceeded = false;
55			try {
56			// this should generate an IllegalArgumentException
57			Hashtable bad1 = new Hashtable(100, Float.NaN);
58			}
59			catch (IllegalArgumentException e1) {
60			testSucceeded = true;
61			}
62			if (!testSucceeded)
63			throw new Exception("Hashtable, NaN load factor");
64
65			testSucceeded = false;
66			try {
67			// this should generate an IllegalArgumentException
68			HashMap bad1 = new HashMap(100, -3);
69			}
70			catch (IllegalArgumentException e1) {
71			testSucceeded = true;
72			}
73			if (!testSucceeded)
74			throw new Exception("HashMap, negative load factor");
75
76			testSucceeded = false;
77			try {
78			// this should generate an IllegalArgumentException
79			HashMap bad1 = new HashMap(100, Float.NaN);
80			}
81			catch (IllegalArgumentException e1) {
82			testSucceeded = true;
83			}
84			if (!testSucceeded)
85			throw new Exception("HashMap, NaN load factor");
86
87
88			testSucceeded = false;
89			try {
90			// this should generate an IllegalArgumentException
91			HashSet bad1 = new HashSet(100, -3);
92			}
93			catch (IllegalArgumentException e1) {
94			testSucceeded = true;
95			}
96			if (!testSucceeded)
97			throw new Exception("HashSet, negative load factor");
98
99			testSucceeded = false;
100			try {
101			// this should generate an IllegalArgumentException
102			HashSet bad1 = new HashSet(100, Float.NaN);
103			}
104			catch (IllegalArgumentException e1) {
105			testSucceeded = true;
106			}
107			if (!testSucceeded)
108			throw new Exception("HashSet, NaN load factor");
109
110			testSucceeded = false;
111			try {
112			// this should generate an IllegalArgumentException
113			WeakHashMap bad1 = new WeakHashMap(100, -3);
114			}
115			catch (IllegalArgumentException e1) {
116			testSucceeded = true;
117			}
118			if (!testSucceeded)
119			throw new Exception("WeakHashMap, negative load factor");
120
121			testSucceeded = false;
122			try {
123			// this should generate an IllegalArgumentException
124			WeakHashMap bad1 = new WeakHashMap(100, Float.NaN);
125			}
126			catch (IllegalArgumentException e1) {
127			testSucceeded = true;
128			}
129			if (!testSucceeded)
130			throw new Exception("WeakHashMap, NaN load factor");
131
132			// Make sure that legal creates don't throw exceptions
133			Map goodMap = new Hashtable(100, .69f);
134			goodMap = new HashMap(100, .69f);
135			Set goodSet = new HashSet(100, .69f);
136			goodMap = new WeakHashMap(100, .69f);
137			}
138	jsr166	1.1	}