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.

They're not just asking how do you use the HashMap class from the Java Collections API, but they're asking: how does it work internally? The thing is, there's actually a little bit of a trick to this ...

There is a need to obtain the numeric index of the previous or next element in an ordered collection. The Java Collections Framework provides a wealth of classes, interfaces, enums and records to help ...