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 ...

It’s also worth noting that if a class does not override hashCode(), then its own hash code will obviously match that provided by Object. In the example above, the SimpleData class (not shown here) ...

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 ...