Java Basics

Java Basics

0%

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()

Challenge: Factorial

Task

Write a Java program to calculate the factorial of a number using a for loop. The factorial of a number is the product of all positive integers from 1 to that number, inclusive.

For example, the factorial of 5 (denoted as 5!) is

5 * 4 * 3 * 2 * 1 = 120.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Thanks for your feedback!

Section 3. Chapter 7

toggle bottom row

Challenge: Factorial

Task

Write a Java program to calculate the factorial of a number using a for loop. The factorial of a number is the product of all positive integers from 1 to that number, inclusive.

For example, the factorial of 5 (denoted as 5!) is

5 * 4 * 3 * 2 * 1 = 120.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Thanks for your feedback!

Section 3. Chapter 7

toggle bottom row

Challenge: Factorial

Task

Write a Java program to calculate the factorial of a number using a for loop. The factorial of a number is the product of all positive integers from 1 to that number, inclusive.

For example, the factorial of 5 (denoted as 5!) is

5 * 4 * 3 * 2 * 1 = 120.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Thanks for your feedback!

Task

Write a Java program to calculate the factorial of a number using a for loop. The factorial of a number is the product of all positive integers from 1 to that number, inclusive.

For example, the factorial of 5 (denoted as 5!) is

5 * 4 * 3 * 2 * 1 = 120.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Section 3. Chapter 7

Switch to desktop for real-world practiceContinue from where you are using one of the options below

some-alt