If 3 + n = 5, then what is n? Of course, the answer is n = 2. This is how variables work in programming. A variable is a label (usually a word) that can be substituted for a piece of data.

Developers use variables in Java to hold data, with all variables having a data type and a name. The data type determines the values that a variable can hold.

This tutorial launches a short series introducing data structures and algorithms. In Part 1, you’ll learn what a data structure is and how data structures are classified.

In this improved code, we've replaced explicit type declarations with var. Unnamed patterns and variables Java empowers us to streamline pattern matching even further with the use of unnamed patterns ...