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Object references

Maureen Charlton
Ranch Hand

Joined: Oct 04, 2004
Posts: 218
* Object
* Cloneable
* Serializable

My understanding is the above three are object references.

Could someone give me an example of what these are/do/mean?
marc weber
Sheriff

Joined: Aug 31, 2004
Posts: 11343

An "object reference" is basically a "handle" on a particular instance of some class. It is essentially a memory address, indicating where exactly that object is stored.

As for Object, Cloneable, and Serializable...

Object (class):
http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html

Cloneable (interface):
http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Cloneable.html

Serializable (interface):
http://java.sun.com/j2se/1.5.0/docs/api/java/io/Serializable.html


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Maureen Charlton
Ranch Hand

Joined: Oct 04, 2004
Posts: 218
Marc,

Excellent reply - especially the links!

Many thanks!!
Layne Lund
Ranch Hand

Joined: Dec 06, 2001
Posts: 3061
The links given above come from Sun's Java API documentation. Learning how to navigate these is an essential skill for any Java programmer, imo. I strongly encourage you to use the link given here to find the docs for the version of Java that you are using.

Layne


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