ОТКРЫТЫЙ КУРС · 25 lessons

Java • Basics

Learn core Java: data types, input, decisions, loops, arrays, methods and objects.

Learning with progressNotes can be read without registration. An account is required to save the tasks.

Who this is for

For beginners interested in writing Java programs. No experience is required, though Python basics can help you compare familiar ideas.

How the course works

25 lessons in five modules. Each lesson includes an example, guided classwork and independent homework. The final exam checks topics from the whole course.

What you will learn

Understand a Main class and how a program starts in main.
Use types, Scanner, decisions, loops and arrays.
Split a task into methods and create simple classes and objects.
Read error messages and build a small console program.

Module path

IntroductionThe structure of a first Java program and output.
Data and solutionsData, user input and choosing an action.
Repetitions and arraysRepeating actions and storing multiple values.
Your tools.Methods, classes and your own tools.
Small programmesBuilding small programs and reviewing core topics.

Your result

Finish with a small independent program using what you learned and an exam across all five modules. Your progress and grade are saved to your account; you may retake the exam.

What comes next

This is console Java at foundation level. Large application builds, graphical interfaces, Spring and server development are outside this course.

MODULE 1 · УРОКИ 1–5

Introduction

Class, main and output — for loop

MODULE 2 · УРОКИ 6–10

Data and solutions

Type double — Scanner and input

MODULE 3 · УРОКИ 11–15

Repetitions and arrays

while loop — Array and sum

MODULE 4 · УРОКИ 16–20

Your tools.

Method without argument — Designer

MODULE 5 · УРОКИ 21–25

Small programmes

Method of object — Array, loop, condition and method