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Arrays are reference variables, which means simple assignment doesn't make a copy of the values.

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ArrayLists let you store an arbitrary number of items, unlike Arrays, which have a fixed length. Here are some of the most-used ...

Java methods are somewhat like algebraic functions. Find out how they are similar and different.

How to pass arrays to methods and return arrays as results.

Learn how to declare, initialize, and iterate through arrays.

Handling a two-dimensional arrays that represent a matrix of rows and columns.

Here are two approaches to solving the problem. (I'm not entirely happy with this video; the script just didn't seem to “click” for me, ...

In Java, you can have a two-dimensional array where each row has a different number of elements. This is called a ragged array.

Arrays aren't only for ints, doubles, etc. You can put objects into them. This video shows you how to create and initialize an array ...

In Java, you can have a two-dimensional array where each row has a different number of elements. This is called a ragged array.

When you pass an object to a method, you are passing a copy of the *reference* to that object. That lets you update an object's ...

Struggling to understand how arrays work under the hood? In this video, we explore how arrays are stored in memory and why ...

Converting Arrays to ArrayLists, and the remove(), contains(),indexOf(), and lastIndexOf() methods.

You can have multiple methods with the same name as long as the number and/or types of the parameters is different.

How to write a method that will take any number of arguments you would like to pass to it; it will treat them as an array.

What's going on behind the scenes when you call a method in Java?

Discover powerful advanced tips for utilizing Java records effectively. Learn how to leverage compact constructors and ensure ...

Since we're displaying the array values twice, we might as well make that a function. This function doesn't return any value; it's a ...

Java Tutorial: Arrays and Multi-Dimensional Arrays Arrays are variables than can hold more than one value. They can be ...

The System.out.format() method makes it easier for you to get output with your variable values in them. It also lets you make output ...

Working with parallel arrays in java.

Creating your first class and instantiating objects from it in Java.

Learn how to declare and iterate over two-dimensional arrays.