Java Basics

Java Basics

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1. Getting Started

In this section, you will get acquainted with Java, understand its peculiarities, and why I would recommend learning this particular programming language. You will write your first Java code and familiarize yourself with printing text to the console. Shall we begin?

Backend Development

Role of Java in the Backend

Java Advantages

Memory Types In Java

Your First Program

2. Basic Types, Operations

We have completed a theoretical course, and now the most interesting part begins. In this section, we will familiarize ourselves with the basics of coding, primitive data types, and operations on them. Now your code can perform mathematical tasks and evaluate conditions for further execution. Sounds interesting? Let's start getting acquainted.

Primitive Data Types

Primitive Types Challenge

Char and ASCII Table

Mathematical Operations in Java

If-Else Statement

Switch-Case Statement

Weekday Switch Challenge

3. Loops

In this section, we will familiarize ourselves with various loops such as for, while, and do-while. Loops are essential to any programming language, as they allow us to efficiently iterate over a large amount of data and save significant time. Later on, you will use loops extensively in tasks like sorting, working with arrays, collections, and more. Well then, let's get started.

Introduction to Loops

Increment and Decrement

Infinite Loop (bonus)

Challenge: Factorial

4. Arrays

This section will cover arrays and how to use them correctly. We will learn how to group data into arrays and explore some methods for working with arrays. Arrays are essential to any programming language Java, so let's dive in.

Using Loops with Arrays

Index Out Of Bounds

Two-Dimentional Array

Iteration In Two-Dimensional Array

5. String

In this section, you will be introduced to a data type called String. Why is there a separate section in the course for this data type? String is a significant data type with many built-in methods and operations. In this course, you will learn about String and StringBuilder, explore their basic methods, and learn how to use strings effectively in Java. So, are you ready to get started?

What Is String?

Basic Methods In String Part 1

Basic Methods In String Part 2

B-Inclusion Filter Challenge

NullPointer Exception

String Pool, Method Equals()

Java Advantages

Why Java?

To begin with, it's worth understanding why people choose Java. What are its advantages over other programming languages? How does Java work and perform operations?

First of all, it's important to mention that a large number of websites and games that are incredibly popular today are written in Java. The official Pentagon website, Netflix, Amazon, PayPal, and many others are some notable examples. Java is an old and very stable programming language that is supported and consistently updated every six months.

How does it work?

Java is exclusively an object-oriented language. You'll learn what that means and how to use it in upcoming courses. For now, you should know that object-oriented programming is very convenient and popular. Programmers prefer Java because the code written in this programming language is easy to understand and extend.

Additionally, Java is a cross-platform programming language. Let's see how this cross-platform capability is achieved:

Java is known for its Write Once, Run Anywhere principle. This is achieved thanks to the JVM (Java Virtual Machine). We'll delve into what it is in more detail in the next course.

The JVM transforms the code we write into machine bytecode, which is understandable by any system and computer. So, you can even run Java code on a refrigerator (provided that the refrigerator has a Java compiler installed).

These and many other points are key in choosing Java as a programming language for development, and with us, you'll learn how to effectively use this programming language to achieve your goals and those of the company!

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Section 1. Chapter 3

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