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POHow does "final" play a role in security?
 

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    1. USuser93353
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      1. USDavid Grinberg
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    1. CO@user93353 - Here's [a link from Oracle](http://www.oracle.com/technetwork/java/seccodeguide-139067.html) that says the following about security and the _final_ keyword: "_It is better to design APIs with security in mind. Trying to retrofit security into an existing API is more difficult and error prone. For example, making a class final prevents a malicious subclass from adding finalizers, cloning, and overriding random methods (Guideline 4-5)._" (It took about 2 seconds to find)
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      1. USjahroy
    2. CO@user93353 - Here's another quote from the same [link](http://www.oracle.com/technetwork/java/seccodeguide-139067.html): "_Design classes and methods for inheritance or declare them final [6]. Left non-final, a class or method can be maliciously overridden by an attacker. A class that does not permit subclassing is easier to implement and verify that it is secure. Prefer composition to inheritance._" If you read that document there are dozens of code examples that make use of the _final_ keyword... and they're not using it because it's fun.
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    3. COYour duplicate question have attracted a large number of bad answer and comments. People are simply believing in everything they've read somewhere in internet. The original question has a reasonable answer: http://stackoverflow.com/a/2111887/531954
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      1. USDanubian Sailor
 

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