Bag of Beans » programming http://bagofbeans.tsangal.org Caffeine not included. Thu, 29 Jul 2010 01:25:14 +0000 http://wordpress.org/?v=2.9.2 en hourly 1 How to Write an Equality Method in Java http://bagofbeans.tsangal.org/archives/511 http://bagofbeans.tsangal.org/archives/511#comments Tue, 09 Jun 2009 17:47:38 +0000 Beanbag http://bagofbeans.tsangal.org/?p=511 Excellent article on how to avoid common pitfalls and preserve the contract of equals() when writing an equality method in Java.

Class java.lang.Object defines an equals method, which subclasses may override. Unfortunately, it turns out that writing a correct equality method is surprisingly difficult in object-oriented languages. In fact, after studying a large body of Java code, the authors of a 2007 paper concluded that almost all implementations of equals methods are faulty.

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