Obi Ezechukwu‘s blog High-Octane Java recently featured the post Compact Equals, which compares an implementation of a Java class’s overridden equals method in traditional form versus one implemented ...

Have you ever wondered how Java seamlessly combines its primitive data types with object-oriented programming? Enter wrapper classes, an important but often overlooked Java feature. These special ...

Let's say I have a class that encapsulates 2 other objects (Strings in my case, but could be anything). I want to override equals() and hashCode(), such that any 2 objects of my class with equal ...

I have a class, say TextHolder, that overrides Object.equals() to return true if both strings in each object are equal - <tt>new TextHolder("Hello World!").equals(new ...

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 ...