Introduction

Java's object-oriented code structure can make referencing variables in multiple places more difficult. It can also be difficult at times to decide which class a given variable should be a part of, especially if it's a widely used value like a database connector or mathematical constant.

In many languages,

Introduction

Key-value stores are essential and often used, especially in operations that require fast and frequent lookups. They allow an object - the key - to be mapped to another object, the value. This way, the values can easily be retrieved, by looking up the key.

In Java, the most

Introduction

Sorting data is a frequent problem in computer science. Given a collection of elements, the goal is to rearrange them in some order. Common examples are sorting an array alphabetically or from smallest to largest.

Sorted data is a lot easier to manipulate. Finding the largest or smallest element

Introduction

Whether in Java, or any other programming language, it is a common occurrence to check if an array contains a value. This is one of the things that most beginners tend to learn, and it is a useful thing to know in general.

In this article, we'll take a

Introduction

In this tutorial, we'll take a look at how to declare and initialize arrays in Java.

We declare an array in Java as we do other variables, by providing a type and name:

int[] myArray;

To initialize or instantiate an array as we declare it, meaning we assign values

Introduction

Oftentimes, we are faced with a situation where we need to split a string at some specific character or substring, to derive some useful information from it.

For example, we might want to split a phone number on the country code or data imported from a CSV file.

In