First, it’s important to note that Java and JavaScript aren’t related, despite sharing the term “Java.”. Both Java and JavaScript are languages for developing web pages and web applications. However, they have distinct differences, including:

Object-oriented programming: Java is an object-oriented programming language. JavaScript is an object-based scripting language.

Syntax:JavaScript syntax is not as formal or structured as Java. Thus, it’s simpler for most users.

Compilation:Java is a compiled language, whereas JavaScript is an interpreted language that is interpreted line by line at run-time; compiled languages tend to be faster, but interpreted languages tend to be more flexible.

Environment:You can use Java applications in essentially any environment by running in virtual machines or browsers; JavaScript is for browsers only.

Memory usage:Java is more memory-intensive than JavaScript; this makes JavaScript preferable for web pages and web applications.