Java is an object-oriented language, and Java constructors are how you create objects. Learn about object creation in this full Java constructor tutorial.

Java records are a new language feature that reduces verbosity and enables optimized runtime performance. This Java records tutorial shows how they work.

In Java, polymorphism results in code that is more concise and easier to maintain. This tutorial provides an overview of the four types of Java polymorphism, but our focus is subtype polymorphism.

Learn about serialization in Java with our comprehensive tutorial. We provide examples to help you understand how serialization works.

Part 2 is an in-depth look at the mechanics of java.util.concurrent ‘s advanced locking mechanisms and atomic variables, as well as a short tutorial on the Fork/Join framework.