A frequently asked question in a Java interview is: How to implement a Java HashMap? Java job seekers must fully grok this important concept if they want to ace the interview. The HashMap tutorial ...

I previously blogged on the Apache Commons ToStringBuilder and discussed how it takes away much of the tedium normally associated with implementing toString methods. While implementing toString() does ...

Correct implementation of these methods is so important, in fact, that Josh Bloch covers their implementation in detail in Chapter 3 (“Methods Common to All Objects”) of Effective Java Second Edition ...