Source Code Cross Referenced for Modifier.java in  » 6.0-JDK-Modules » j2me » java » lang » reflect » Java Source Code / Java DocumentationJava Source Code and Java Documentation

Java Source Code / Java Documentation
1. 6.0 JDK Core
2. 6.0 JDK Modules
3. 6.0 JDK Modules com.sun
4. 6.0 JDK Modules com.sun.java
5. 6.0 JDK Modules sun
6. 6.0 JDK Platform
7. Ajax
8. Apache Harmony Java SE
9. Aspect oriented
10. Authentication Authorization
11. Blogger System
12. Build
13. Byte Code
14. Cache
15. Chart
16. Chat
17. Code Analyzer
18. Collaboration
19. Content Management System
20. Database Client
21. Database DBMS
22. Database JDBC Connection Pool
23. Database ORM
24. Development
25. EJB Server geronimo
26. EJB Server GlassFish
27. EJB Server JBoss 4.2.1
28. EJB Server resin 3.1.5
29. ERP CRM Financial
30. ESB
31. Forum
32. GIS
33. Graphic Library
34. Groupware
35. HTML Parser
36. IDE
37. IDE Eclipse
38. IDE Netbeans
39. Installer
40. Internationalization Localization
41. Inversion of Control
42. Issue Tracking
43. J2EE
44. JBoss
45. JMS
46. JMX
47. Library
48. Mail Clients
49. Net
50. Parser
51. PDF
52. Portal
53. Profiler
54. Project Management
55. Report
56. RSS RDF
57. Rule Engine
58. Science
59. Scripting
60. Search Engine
61. Security
62. Sevlet Container
63. Source Control
64. Swing Library
65. Template Engine
66. Test Coverage
67. Testing
68. UML
69. Web Crawler
70. Web Framework
71. Web Mail
72. Web Server
73. Web Services
74. Web Services apache cxf 2.0.1
75. Web Services AXIS2
76. Wiki Engine
77. Workflow Engines
78. XML
79. XML UI
Java
Java Tutorial
Java Open Source
Jar File Download
Java Articles
Java Products
Java by API
Photoshop Tutorials
Maya Tutorials
Flash Tutorials
3ds-Max Tutorials
Illustrator Tutorials
GIMP Tutorials
C# / C Sharp
C# / CSharp Tutorial
C# / CSharp Open Source
ASP.Net
ASP.NET Tutorial
JavaScript DHTML
JavaScript Tutorial
JavaScript Reference
HTML / CSS
HTML CSS Reference
C / ANSI-C
C Tutorial
C++
C++ Tutorial
Ruby
PHP
Python
Python Tutorial
Python Open Source
SQL Server / T-SQL
SQL Server / T-SQL Tutorial
Oracle PL / SQL
Oracle PL/SQL Tutorial
PostgreSQL
SQL / MySQL
MySQL Tutorial
VB.Net
VB.Net Tutorial
Flash / Flex / ActionScript
VBA / Excel / Access / Word
XML
XML Tutorial
Microsoft Office PowerPoint 2007 Tutorial
Microsoft Office Excel 2007 Tutorial
Microsoft Office Word 2007 Tutorial
Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » java.lang.reflect 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * @(#)Modifier.java	1.24 06/10/10
003:         *
004:         * Copyright  1990-2006 Sun Microsystems, Inc. All Rights Reserved.  
005:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER  
006:         *   
007:         * This program is free software; you can redistribute it and/or  
008:         * modify it under the terms of the GNU General Public License version  
009:         * 2 only, as published by the Free Software Foundation.   
010:         *   
011:         * This program is distributed in the hope that it will be useful, but  
012:         * WITHOUT ANY WARRANTY; without even the implied warranty of  
013:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU  
014:         * General Public License version 2 for more details (a copy is  
015:         * included at /legal/license.txt).   
016:         *   
017:         * You should have received a copy of the GNU General Public License  
018:         * version 2 along with this work; if not, write to the Free Software  
019:         * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  
020:         * 02110-1301 USA   
021:         *   
022:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa  
023:         * Clara, CA 95054 or visit www.sun.com if you need additional  
024:         * information or have any questions. 
025:         *
026:         */
027:
028:        package java.lang.reflect;
029:
030:        /**
031:         * The Modifier class provides <code>static</code> methods and
032:         * constants to decode class and member access modifiers.  The sets of
033:         * modifiers are represented as integers with distinct bit positions
034:         * representing different modifiers.  The values for the constants
035:         * representing the modifiers are taken from <a
036:         * href="http://java.sun.com/docs/books/vmspec/2nd-edition/html/VMSpecTOC.doc.html"><i>The
037:         * Java</i><sup><small>TM</small></sup> <i>Virtual Machine Specification, Second
038:         * edition</i></a> tables 
039:         * <a href="http://java.sun.com/docs/books/vmspec/2nd-edition/html/ClassFile.doc.html#75734">4.1</a>,
040:         * <a href="http://java.sun.com/docs/books/vmspec/2nd-edition/html/ClassFile.doc.html#88358">4.4</a>,
041:         * <a href="http://java.sun.com/docs/books/vmspec/2nd-edition/html/ClassFile.doc.html#75568">4.5</a>, and 
042:         * <a href="http://java.sun.com/docs/books/vmspec/2nd-edition/html/ClassFile.doc.html#88478">4.7</a>.
043:         *
044:         * @see Class#getModifiers()
045:         * @see Member#getModifiers()
046:         *
047:         * @author Nakul Saraiya
048:         */
049:        public class Modifier {
050:
051:            /**
052:             * Return <tt>true</tt> if the integer argument includes the
053:             * <tt>public</tt> modifer, <tt>false</tt> otherwise.
054:             *
055:             * @param 	mod a set of modifers
056:             * @return <tt>true</tt> if <code>mod</code> includes the
057:             * <tt>public</tt> modifier; <tt>false</tt> otherwise.
058:             */
059:            public static boolean isPublic(int mod) {
060:                return (mod & PUBLIC) != 0;
061:            }
062:
063:            /**
064:             * Return <tt>true</tt> if the integer argument includes the
065:             * <tt>private</tt> modifer, <tt>false</tt> otherwise.
066:             *
067:             * @param 	mod a set of modifers
068:             * @return <tt>true</tt> if <code>mod</code> includes the
069:             * <tt>private</tt> modifier; <tt>false</tt> otherwise.
070:             */
071:            public static boolean isPrivate(int mod) {
072:                return (mod & PRIVATE) != 0;
073:            }
074:
075:            /**
076:             * Return <tt>true</tt> if the integer argument includes the
077:             * <tt>protected</tt> modifer, <tt>false</tt> otherwise.
078:             *
079:             * @param 	mod a set of modifers
080:             * @return <tt>true</tt> if <code>mod</code> includes the
081:             * <tt>protected</tt> modifier; <tt>false</tt> otherwise.
082:             */
083:            public static boolean isProtected(int mod) {
084:                return (mod & PROTECTED) != 0;
085:            }
086:
087:            /**
088:             * Return <tt>true</tt> if the integer argument includes the
089:             * <tt>static</tt> modifer, <tt>false</tt> otherwise.
090:             *
091:             * @param 	mod a set of modifers
092:             * @return <tt>true</tt> if <code>mod</code> includes the
093:             * <tt>static</tt> modifier; <tt>false</tt> otherwise.
094:             */
095:            public static boolean isStatic(int mod) {
096:                return (mod & STATIC) != 0;
097:            }
098:
099:            /**
100:             * Return <tt>true</tt> if the integer argument includes the
101:             * <tt>final</tt> modifer, <tt>false</tt> otherwise.
102:             *
103:             * @param 	mod a set of modifers
104:             * @return <tt>true</tt> if <code>mod</code> includes the
105:             * <tt>final</tt> modifier; <tt>false</tt> otherwise.
106:             */
107:            public static boolean isFinal(int mod) {
108:                return (mod & FINAL) != 0;
109:            }
110:
111:            /**
112:             * Return <tt>true</tt> if the integer argument includes the
113:             * <tt>synchronized</tt> modifer, <tt>false</tt> otherwise.
114:             *
115:             * @param 	mod a set of modifers
116:             * @return <tt>true</tt> if <code>mod</code> includes the
117:             * <tt>synchronized</tt> modifier; <tt>false</tt> otherwise.
118:             */
119:            public static boolean isSynchronized(int mod) {
120:                return (mod & SYNCHRONIZED) != 0;
121:            }
122:
123:            /**
124:             * Return <tt>true</tt> if the integer argument includes the
125:             * <tt>volatile</tt> modifer, <tt>false</tt> otherwise.
126:             *
127:             * @param 	mod a set of modifers
128:             * @return <tt>true</tt> if <code>mod</code> includes the
129:             * <tt>volatile</tt> modifier; <tt>false</tt> otherwise.
130:             */
131:            public static boolean isVolatile(int mod) {
132:                return (mod & VOLATILE) != 0;
133:            }
134:
135:            /**
136:             * Return <tt>true</tt> if the integer argument includes the
137:             * <tt>transient</tt> modifer, <tt>false</tt> otherwise.
138:             *
139:             * @param 	mod a set of modifers
140:             * @return <tt>true</tt> if <code>mod</code> includes the
141:             * <tt>transient</tt> modifier; <tt>false</tt> otherwise.
142:             */
143:            public static boolean isTransient(int mod) {
144:                return (mod & TRANSIENT) != 0;
145:            }
146:
147:            /**
148:             * Return <tt>true</tt> if the integer argument includes the
149:             * <tt>native</tt> modifer, <tt>false</tt> otherwise.
150:             *
151:             * @param 	mod a set of modifers
152:             * @return <tt>true</tt> if <code>mod</code> includes the
153:             * <tt>native</tt> modifier; <tt>false</tt> otherwise.
154:             */
155:            public static boolean isNative(int mod) {
156:                return (mod & NATIVE) != 0;
157:            }
158:
159:            /**
160:             * Return <tt>true</tt> if the integer argument includes the
161:             * <tt>interface</tt> modifer, <tt>false</tt> otherwise.
162:             *
163:             * @param 	mod a set of modifers
164:             * @return <tt>true</tt> if <code>mod</code> includes the
165:             * <tt>interface</tt> modifier; <tt>false</tt> otherwise.
166:             */
167:            public static boolean isInterface(int mod) {
168:                return (mod & INTERFACE) != 0;
169:            }
170:
171:            /**
172:             * Return <tt>true</tt> if the integer argument includes the
173:             * <tt>abstract</tt> modifer, <tt>false</tt> otherwise.
174:             *
175:             * @param 	mod a set of modifers
176:             * @return <tt>true</tt> if <code>mod</code> includes the
177:             * <tt>abstract</tt> modifier; <tt>false</tt> otherwise.
178:             */
179:            public static boolean isAbstract(int mod) {
180:                return (mod & ABSTRACT) != 0;
181:            }
182:
183:            /**
184:             * Return <tt>true</tt> if the integer argument includes the
185:             * <tt>strictfp</tt> modifer, <tt>false</tt> otherwise.
186:             *
187:             * @param 	mod a set of modifers
188:             * @return <tt>true</tt> if <code>mod</code> includes the
189:             * <tt>strictfp</tt> modifier; <tt>false</tt> otherwise.
190:             */
191:            public static boolean isStrict(int mod) {
192:                return (mod & STRICT) != 0;
193:            }
194:
195:            /**
196:             * Return a string describing the access modifier flags in
197:             * the specified modifier. For example:
198:             * <blockquote><pre>
199:             *    public final synchronized strictfp
200:             * </pre></blockquote>
201:             * The modifier names are returned in an order consistent with the
202:             * suggested modifier orderings given in <a
203:             * href="http://java.sun.com/docs/books/jls/second_edition/html/j.title.doc.html"><em>The
204:             * Java Language Specification, Second Edition</em></a> sections
205:             * <a href="http://java.sun.com/docs/books/jls/second_edition/html/classes.doc.html#21613">&sect;8.1.1</a>, 
206:             * <a href="http://java.sun.com/docs/books/jls/second_edition/html/classes.doc.html#78091">&sect;8.3.1</a>, 
207:             * <a href="http://java.sun.com/docs/books/jls/second_edition/html/classes.doc.html#78188">&sect;8.4.3</a>, 
208:             * <a href="http://java.sun.com/docs/books/jls/second_edition/html/classes.doc.html#42018">&sect;8.8.3</a>, and
209:             * <a href="http://java.sun.com/docs/books/jls/second_edition/html/interfaces.doc.html#235947">&sect;9.1.1</a>.  
210:             * The full modifier ordering used by this method is:
211:             * <blockquote> <code> 
212:             * public protected private abstract static final transient
213:             * volatile synchronized native strictfp
214:             * interface </code> </blockquote> 
215:             * The <code>interface</code> modifier discussed in this class is
216:             * not a true modifier in the Java language and it appears after
217:             * all other modifiers listed by this method.  This method may
218:             * return a string of modifiers that are not valid modifiers of a
219:             * Java entity; in other words, no checking is done on the
220:             * possible validity of the combination of modifiers represented
221:             * by the input.
222:             *
223:             * @param	mod a set of modifers
224:             * @return	a string representation of the set of modifers
225:             * represented by <code>mod</code>
226:             */
227:            public static String toString(int mod) {
228:                StringBuffer sb = new StringBuffer();
229:                int len;
230:
231:                if ((mod & PUBLIC) != 0)
232:                    sb.append("public ");
233:                if ((mod & PROTECTED) != 0)
234:                    sb.append("protected ");
235:                if ((mod & PRIVATE) != 0)
236:                    sb.append("private ");
237:
238:                /* Canonical order */
239:                if ((mod & ABSTRACT) != 0)
240:                    sb.append("abstract ");
241:                if ((mod & STATIC) != 0)
242:                    sb.append("static ");
243:                if ((mod & FINAL) != 0)
244:                    sb.append("final ");
245:                if ((mod & TRANSIENT) != 0)
246:                    sb.append("transient ");
247:                if ((mod & VOLATILE) != 0)
248:                    sb.append("volatile ");
249:                if ((mod & SYNCHRONIZED) != 0)
250:                    sb.append("synchronized ");
251:                if ((mod & NATIVE) != 0)
252:                    sb.append("native ");
253:                if ((mod & STRICT) != 0)
254:                    sb.append("strictfp ");
255:                if ((mod & INTERFACE) != 0)
256:                    sb.append("interface ");
257:
258:                if ((len = sb.length()) > 0) /* trim trailing space */
259:                    return sb.toString().substring(0, len - 1);
260:                return "";
261:            }
262:
263:            /*
264:             * Access modifier flag constants from <em>The Java Virtual
265:             * Machine Specification, Second Edition</em>, tables 4.1, 4.4,
266:             * 4.5, and 4.7.
267:             */
268:
269:            /**
270:             * The <code>int</code> value representing the <code>public</code> 
271:             * modifier.
272:             */
273:            public static final int PUBLIC = 0x00000001;
274:
275:            /**
276:             * The <code>int</code> value representing the <code>private</code> 
277:             * modifier.
278:             */
279:            public static final int PRIVATE = 0x00000002;
280:
281:            /**
282:             * The <code>int</code> value representing the <code>protected</code> 
283:             * modifier.
284:             */
285:            public static final int PROTECTED = 0x00000004;
286:
287:            /**
288:             * The <code>int</code> value representing the <code>static</code> 
289:             * modifier.
290:             */
291:            public static final int STATIC = 0x00000008;
292:
293:            /**
294:             * The <code>int</code> value representing the <code>final</code> 
295:             * modifier.
296:             */
297:            public static final int FINAL = 0x00000010;
298:
299:            /**
300:             * The <code>int</code> value representing the <code>synchronized</code> 
301:             * modifier.
302:             */
303:            public static final int SYNCHRONIZED = 0x00000020;
304:
305:            /**
306:             * The <code>int</code> value representing the <code>volatile</code> 
307:             * modifier.
308:             */
309:            public static final int VOLATILE = 0x00000040;
310:
311:            /**
312:             * The <code>int</code> value representing the <code>transient</code> 
313:             * modifier.
314:             */
315:            public static final int TRANSIENT = 0x00000080;
316:
317:            /**
318:             * The <code>int</code> value representing the <code>native</code> 
319:             * modifier.
320:             */
321:            public static final int NATIVE = 0x00000100;
322:
323:            /**
324:             * The <code>int</code> value representing the <code>interface</code> 
325:             * modifier.
326:             */
327:            public static final int INTERFACE = 0x00000200;
328:
329:            /**
330:             * The <code>int</code> value representing the <code>abstract</code> 
331:             * modifier.
332:             */
333:            public static final int ABSTRACT = 0x00000400;
334:
335:            /**
336:             * The <code>int</code> value representing the <code>strictfp</code> 
337:             * modifier.
338:             */
339:            public static final int STRICT = 0x00000800;
340:
341:        }
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.