You might know that Java passes by value, but it helps to understand why. Here's what happens when you pass mutable and immutable object references in Java.

Learn what a variable is, how to declare it, what types of variables exist, and what scope and modifiers mean in Java, one of the most popular programming languages.

Java 22 introduces several new language features but there’s one particularly important. This article shows you how to leverage the Unnamed variables and patterns with simple examples.

What are Unnamed variables and patterns? A significant and welcome addition in Java 22 is the finalization of Unnamed variables and patterns, officially detailed in JEP 456. This feature enhances code ...

Copying objects is a common Java programming operation that has one serious trap. Here's how to avoid copying from an object reference and only copy the instance and values you want.

String s1 = new String("Hello world!"); That code will create an s1 string object and a reference variable. As noted, Java strings are immutable. Once created, a string using string class cannot be ...