Use Java assertions to test your assumptions about program correctness and check them in your code.

But how many developers understand how HashMap works internally? A few days ago, I read a lot of the source code for ...

For example, if Java infers a type to be a String, it will not assigned that type to an int or a float later on in the code. int x = 10; x = "ten"; // Error: violation of strong typing in Java When ...

Get a deep dive into using method references in your Java programs, including stream operations, event listeners, and constructors and factories.

This Visual Studio Code for Java tutorial shows you how to install the Java extensions pack for VS Code, create a Java project and run a simple program.