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Final, Finally and Finalize - three special words in Java

A final method or variable is one that can't be overridden - you can define a method as final within a class to ensure that any extensions to the class don't replace it.

If you add a finally block onto the end of a try / catch exception handler, you're defining a block of code that will be run if the try is entered, even if problems occur and your method returns from within a catch rather than continuing.

A finalize method is your destructor method - code that's run to clean up objects that are no longer required. For example, objects which are memory cached would be flushed back to the disc in your finalize.
(written 2007-02-05)

 
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J710 - Java - Extending Classes and More
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J712 - Java - Exceptions
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Serialization in Java - all layers required!
Final, Finally and Finalize - three special words in Java
Graham Ellis - an Introduction
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This is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.

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