File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
http://aspose.com/file-tools
The moose likes Beginning Java and the fly likes Class object instance Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Java » Beginning Java
Bookmark "Class object instance" Watch "Class object instance" New topic
Author

Class object instance

Rajendra Prakash
Ranch Hand

Joined: Sep 10, 2009
Posts: 293
I need little explanation about class object and instance. What i read is " class is user defined data type , classes are blueprints of objects. Object is entity which contains data its related methods. What is instance
sudhir nim
Ranch Hand

Joined: Aug 29, 2007
Posts: 212

You read correct, class is just a user defined data type or blueprint of objects. It does not occupy any memory. It just defines what the objects would be, what data it would contain and how will it behave. Where as objects and physical entities, it occupies memory. You create an instance of a class by using "new" operator

Box b = new Box();

Here b is a new instance of Class Box, it will have behavior specified by Box class. A Class does not have physical existence in it self, its a blueprint from which you can create any number of instances of that class.


[Servlet tutorial] [Servlet 3.0 Cook Book]
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: Class object instance
 
Similar Threads
Easy Java question. (I promise!)
Difference between Object and Instance
getConnection throwing NotSerializableException
classes
what exactly meant by ANYCLASS.class