Mercurial > jdk8-mips64-public > langtools / annotate
test/tools/javac/StringConversion.java@9d9f26857129 (annotated)
test/tools/javac/StringConversion.java
Tue, 25 May 2010 15:54:51 -0700
- author
- ohair
- date
- Tue, 25 May 2010 15:54:51 -0700
- changeset 554
- 9d9f26857129
- parent 1
- 9a66ca7c79fa
- child 2525
- 2eb010b6cb22
- permissions
- -rw-r--r--
6943119: Rebrand source copyright notices
Reviewed-by: darcy
| duke@1 | 1 | /* |
| ohair@554 | 2 | * Copyright (c) 1997, 1998, Oracle and/or its affiliates. All rights reserved. |
| duke@1 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| duke@1 | 4 | * |
| duke@1 | 5 | * This code is free software; you can redistribute it and/or modify it |
| duke@1 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| duke@1 | 7 | * published by the Free Software Foundation. |
| duke@1 | 8 | * |
| duke@1 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| duke@1 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| duke@1 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| duke@1 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| duke@1 | 13 | * accompanied this code). |
| duke@1 | 14 | * |
| duke@1 | 15 | * You should have received a copy of the GNU General Public License version |
| duke@1 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| duke@1 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| duke@1 | 18 | * |
| ohair@554 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| ohair@554 | 20 | * or visit www.oracle.com if you need additional information or have any |
| ohair@554 | 21 | * questions. |
| duke@1 | 22 | */ |
| duke@1 | 23 | |
| duke@1 | 24 | /* |
| duke@1 | 25 | * @test |
| duke@1 | 26 | * @bug 4030173 4071548 |
| duke@1 | 27 | * @summary Verify correct conversion of non-string arguments in string concatenation. |
| duke@1 | 28 | * @author maddox |
| duke@1 | 29 | * |
| duke@1 | 30 | * @compile StringConversion.java |
| duke@1 | 31 | * @run main StringConversion |
| duke@1 | 32 | */ |
| duke@1 | 33 | |
| duke@1 | 34 | class FooBar { |
| duke@1 | 35 | public String toString(){ |
| duke@1 | 36 | return null; |
| duke@1 | 37 | } |
| duke@1 | 38 | } |
| duke@1 | 39 | |
| duke@1 | 40 | public class StringConversion { |
| duke@1 | 41 | |
| duke@1 | 42 | static void check(int testid, String have, String expect) |
| duke@1 | 43 | throws Exception { |
| duke@1 | 44 | if ((have == null && have != expect) || |
| duke@1 | 45 | (have != null && !have.equals(expect))) { |
| duke@1 | 46 | String msg = |
| duke@1 | 47 | "TEST " + testid + ": HAVE \"" + |
| duke@1 | 48 | have + "\" EXPECT \"" + expect + "\""; |
| duke@1 | 49 | System.out.println("StringConversion: " + msg); |
| duke@1 | 50 | throw new Exception(msg); |
| duke@1 | 51 | } |
| duke@1 | 52 | } |
| duke@1 | 53 | |
| duke@1 | 54 | public static void main(String[] args) throws Exception { |
| duke@1 | 55 | |
| duke@1 | 56 | String s; |
| duke@1 | 57 | String n = null; |
| duke@1 | 58 | Object o = null; |
| duke@1 | 59 | FooBar m = new FooBar(); |
| duke@1 | 60 | |
| duke@1 | 61 | // Null reference must be converted to "null" |
| duke@1 | 62 | |
| duke@1 | 63 | // Conversion will be done by 'StringBuffer.append'. |
| duke@1 | 64 | s = "foo" + n; |
| duke@1 | 65 | check(11, s, "foonull"); |
| duke@1 | 66 | s = n + "bar"; |
| duke@1 | 67 | check(12, s, "nullbar"); |
| duke@1 | 68 | s = "foo" + o; |
| duke@1 | 69 | check(13, s, "foonull"); |
| duke@1 | 70 | s = o + "bar"; |
| duke@1 | 71 | check(14, s, "nullbar"); |
| duke@1 | 72 | |
| duke@1 | 73 | // Conversion will be done by 'String.valueOf'. |
| duke@1 | 74 | s = "" + n; |
| duke@1 | 75 | check(21, s, "null"); |
| duke@1 | 76 | s = n + ""; |
| duke@1 | 77 | check(22, s, "null"); |
| duke@1 | 78 | s = "" + o; |
| duke@1 | 79 | check(23, s, "null"); |
| duke@1 | 80 | s = o + ""; |
| duke@1 | 81 | check(24, s, "null"); |
| duke@1 | 82 | |
| duke@1 | 83 | // Null 'toString' result must be converted to "null" |
| duke@1 | 84 | |
| duke@1 | 85 | // Conversion will be done by 'StringBuffer.append'. |
| duke@1 | 86 | s = "foo" + m; |
| duke@1 | 87 | check(31, s, "foonull"); |
| duke@1 | 88 | s = m + "bar"; |
| duke@1 | 89 | check(32, s, "nullbar"); |
| duke@1 | 90 | |
| duke@1 | 91 | // Conversion will be done by 'String.valueOf'. |
| duke@1 | 92 | s = "" + m; |
| duke@1 | 93 | check(43, s, "null"); |
| duke@1 | 94 | s = m + ""; |
| duke@1 | 95 | check(44, s, "null"); |
| duke@1 | 96 | |
| duke@1 | 97 | // A character array must be converted as if by |
| duke@1 | 98 | // 'toString', i.e., it is treated as an 'Object'. |
| duke@1 | 99 | |
| duke@1 | 100 | s = "polymorph"; |
| duke@1 | 101 | char[] ca = {'i', 's', 'm'}; |
| duke@1 | 102 | |
| duke@1 | 103 | check(51, s + ca, s + ca.toString()); |
| duke@1 | 104 | check(52, ca + s, ca.toString() + s); |
| duke@1 | 105 | |
| duke@1 | 106 | System.out.println("OK"); |
| duke@1 | 107 | } |
| duke@1 | 108 | } |
