Object Reflection: create new instance : Class « Reflection « Java

Java
1. 2D Graphics GUI
2. 3D
3. Advanced Graphics
4. Ant
5. Apache Common
6. Chart
7. Class
8. Collections Data Structure
9. Data Type
10. Database SQL JDBC
11. Design Pattern
12. Development Class
13. EJB3
14. Email
15. Event
16. File Input Output
17. Game
18. Generics
19. GWT
20. Hibernate
21. I18N
22. J2EE
23. J2ME
24. JDK 6
25. JNDI LDAP
26. JPA
27. JSP
28. JSTL
29. Language Basics
30. Network Protocol
31. PDF RTF
32. Reflection
33. Regular Expressions
34. Scripting
35. Security
36. Servlets
37. Spring
38. Swing Components
39. Swing JFC
40. SWT JFace Eclipse
41. Threads
42. Tiny Application
43. Velocity
44. Web Services SOA
45. XML
Java Tutorial
Java Source Code / Java Documentation
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 » Reflection » ClassScreenshots 
Object Reflection: create new instance
      
/* From http://java.sun.com/docs/books/tutorial/index.html */

/*
 * Copyright (c) 1995-1998 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Permission to use, copy, modify, and distribute this software
 * and its documentation for NON-COMMERCIAL purposes and without
 * fee is hereby granted provided that this copyright notice
 * appears in all copies. Please refer to the file "copyright.html"
 * for further important copyright and licensing information.
 *
 * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
 * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
 * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
 */

import java.awt.Rectangle;

public class SampleNoArg {

   public static void main(String[] args) {
      Rectangle r = (RectanglecreateObject("java.awt.Rectangle");
      System.out.println(r.toString());
   }

   static Object createObject(String className) {
      Object object = null;
      try {
          Class classDefinition = Class.forName(className);
          object = classDefinition.newInstance();
      catch (InstantiationException e) {
          System.out.println(e);
      catch (IllegalAccessException e) {
          System.out.println(e);
      catch (ClassNotFoundException e) {
          System.out.println(e);
      }
      return object;
   }
}

           
         
    
    
    
    
    
  
Related examples in the same category
1. Class Reflection: class modifierClass Reflection: class modifier
2. Class Reflection: class nameClass Reflection: class name
3. Class Reflection: name for super classClass Reflection: name for super class
4. Class reflectionClass reflection
5. This class shows using Reflection to get a field from another classThis class shows using Reflection to get a field from another class
6. Show the class keyword and getClass() method in actionShow the class keyword and getClass() method in action
7. Simple Demonstration of a ClassLoader WILL NOT COMPILE OUT OF THE BOX
8. Demonstrate classFor to create an instance of an object
9. CrossRef prints a cross-reference about all classes named in argv
10. Make up a compilable version of a given Sun or other API
11. Show a couple of things you can do with a Class object
12. Reflect1 shows the information about the class named in argv
13. Show that you can, in fact, take the class of a primitive
14. JavaP prints structural information about classes
15. Object InspectorObject Inspector
16. Provides a set of static methods that extend the Java metaobject
17. Demonstration of speed of reflexive versus programmatic invocation
18. Use reflection to get console char set
19. Load the class source location from Class.getResource()
20. Access the enclosing class from an inner class
21. Use reflection to dynamically discover the capabilities of a class.
22. Get the class By way of a string
23. Get the class By way of .class
24. Return a String representation of an object's overall identity
25. Manipulate Java class files in strange and mysterious ways
26. Class file reader for obtaining the parameter names for declared methods in a class
27. Convert a given String into the appropriate Class.
28. Manipulate Java classes
29. Encapsulates a class serialVersionUID and codebase.
30. Dump a class using Reflection
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.