Get started with this introduction to using generics with the Java Collections Framework. Introduced in Java 5, generics enhance the type safety of your code and make it easier to read.

Using generics results in more robust code and avoids ClassCastExceptions in your Java programs. This in-depth tutorial introduces you to generics and their types and methods.

Transcript - How a Java HashMap internal implementation works One of the most common Java interview questions, and it is an advanced Java interview question, is: How does a Java HashMap work?They're ...

How to add multiple values per key to a Java HashMap. It seems like an oversight for the standard Java API not to have a collection class that allows a key to have multiple values. If this is an ...