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Code Correctness: null Argument to equals()
From OWASP
Revision as of 17:55, 19 July 2006 by Weilin Zhong (talk | contribs)
This is a Vulnerability. To view all vulnerabilities, please see the Vulnerability Category page.
Abstract
The expression obj.equals(null) should always be false.
Description
The program uses the equals() method to compare an object with null. The contract of the equals() method requires this comparison to always return false[1].
Examples
Related Threats
Related Attacks
Related Vulnerabilities
Related Countermeasures
Reference
[1] Sun JavaDoc for Object. http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#equals(java.lang.Object)