Welcome, Cosmic Coder! Today, we are venturing into the realm of Java's built-in functions — pre-packaged tools that will turbocharge your coding experience. Our journey includes acquainting ourselves with built-in functions, their variations uses, tips, and some hands-on coding.

Built-in functions are like freebies in Java. They are built-in and ready to use. You just call them, and they respond, making your programming life easier!

Java offers a wide range of built-in functions that mostly fit under three categories — Math, String, and Array. Let's dive in!

Java's Math class is your calculator. Key functions include:

• Math.max(a, b): It resolves the "which number is greater" debate! For example, Math.max(8, 10) = 10.

• Math.pow(a, b): Raises a to the power b. For example, Math.pow(2, 3) = 8.0, as $2^3=$.