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Java courses for beginners. How to Learn Java Programming - The Complete Guide

Hello dear reader. I have long wanted to write a similar article, but either there was not enough time, or treacherous laziness interfered. But be that as it may, I still managed to gather my thoughts in order to write something that will bring you, I hope, some benefit. I will gladly share my knowledge and experience, in return you are due time and attention. In my opinion, this publication well suited for those who are ready to decide in their interests and want to connect their lives with IT - in one way or another. So let's go!

Choosing a programming language

The publication begins to look like many similar materials. According to the law of the genre, I will have to write the name of a pair of three programming languages, name a couple of pros and cons, and, as a result, without answering the question, move on to the next part. In part, there is some truth in this, because everyone chooses for himself the language that is closer to him, based on what type of products he wants to develop in the future. Most of you studied Turbo Pascal at school and it will hardly be news to you that almost nothing is written in this language now. So in this case, you need to choose the language wisely, although there is never a lot of knowledge, but if you want to effectively join the ranks of programmers in a short period of time, the choice of language must be approached wisely. At the very beginning, remember: a good programmer will never go hungry, and in most cases will be able to buy himself a lot of caviar(this definition is suitable for any specialty, but no specialty will give you such freedom in choosing a place of work, both in terms of companies and countries - he is a programmer and a programmer in India).

It is logical that the more popular the language and the demand, the more likely it will be to find a job in the future, while the language should be easy to learn. Because although they write in C ++ a large number of games and get good money for it, a beginner, especially not familiar with OOP (object-oriented programming), is better off putting this language to hell for a while. The following link provides a list of the most popular programming languages of 2014, and as you can see, Java is in the first place, followed by C languages, then Phyton, JavaScript, PHP, Ruby, etc. If you look for such statistics yourself, you will see that places are occupied differently in different sources, but in general, the first 10 places in content will coincide everywhere.

If you turn to another, which is based on the analysis of vacancies posted on Twitter, you will see a very similar situation with the first example. And yes, both articles are in English, get used to it, if you want to become a programmer, remember that almost all documentation and sources useful information are written in English, so if your knowledge of this language is rather weak, add to your to-do list for tomorrow and for the near future to learn and practice English. I think I will even write a separate article on learning a foreign language.

Based on these two sources, we can already imagine what programming languages are now “in vogue”. As the name suggests, the author of the article chose Java for himself. Although I consider it the best for learning OOP, there are many people who will disagree with me, and this is logical - how many people, so many opinions. Here we are at a small crossroads: choose Java, C # (very similar to Java), Phyton, if we want to work with the stuffing of programs and applications (back-end) or PHP, JavaScript, HTML, if we want to do web development (front-end). In the first case, I would choose Java, and in the second, PHP, although again, it’s more to your taste, you have to look for information about various languages yourself and generally understand what you want to do. For thought, here is a selection of languages that are used in the largest Internet companies in the world.

There are 2 main reasons why I would choose either Java or PHP. The first is very popular languages and it will not be difficult to find the appropriate job, and the second is that in no other language you will find as much teaching material as in these two, both in Russian and in English.

Education

So, we have come to a stage that most people reach without problems, but this period is rightfully one of the most difficult in a programmer's career. Although a programmer learns throughout his life, the time when he begins to take his first steps largely determines his future fate. In general, training tests a person for strength, whether he will endure, whether he will not lose interest in a month (as some people do), whether he will be able to reach the end and master the basic knowledge, on which whole layers of information will then be layered.

In general, I have my own theory, which I have repeatedly confirmed in practice: Absolutely everything can be learned in 1 year.. Believe me, this is the absolute truth, it will even take less time for someone, but if a person does not stop giving up and approaches learning wisely for a year, then it is almost impossible for him not to learn. This is not only in programming, in absolutely any field: if you want to play the guitar - no problem (it didn’t take me much time and effort), learn Argentine tango, surf - all this will take one year. The main thing is to learn!

In this case, I will consider the Java language, since it is still closer to me. Fortunately, the Internet is full of people who donate to help others in learning, so finding the right material for you is not difficult. , which you can look through the walls of your cozy apartment with pen and paper (so far only in Russian). For those who are accustomed to reading through the material, again, the Internet provides great opportunities and this is just one of the various sites with Java lessons. There are more than enough theories, but I can’t say about such a training site as Coursera.org, where you can find training courses in various languages and in various areas, including programming - again, everything is absolutely free. There are not one or two such sites, you just have to look.

But no matter how cognitive theory is, programming cannot do without practice. But even here half the work has already been done for us and there is no need to look for various tasks to improve your skills, a service like JavaRush will help you a lot. In general, this site provides both theory and practice, starting with simply duplicating code from the screen and ending with complex tasks, and even offers to relax and watch the notorious animated series during breaks. According to the authors, those who have reached level 20 in the service will have sufficient knowledge to get a job in an IT company.

And of course, someone will ask, but what about the book? Is it not necessary to read them, and if necessary, then what? To this I will answer that no one has ever become more stupid from reading books. There are also a lot of books, but I will list only a small part of them:

Help in practice

As already mentioned, practice is an integral part of any training, especially in programming. Here you have to code and code, down to the muscle memory of your fingers. This, of course, is a bit exaggerated, but at first you will really have to hit the keys a lot in order to memorize the meanings of various designs, so that in the future you will use them almost automatically.

Many novice programmers have a lot of questions at first, especially when to do independent task. This is fine. But in such situations, you need to understand that almost any question you have can be answered on the Internet. You are unlikely to be the first to encounter it, so do not rush to ask questions on various programmer forums (which I will write about a little later). Sit for a minute, correctly formulate the problem in your head and boldly look for it in the search engine. Surely most will search in Russian, but do not forget that the language of programmers is English, so if you did not find the answer in the great and mighty, you should look in the language that everyone seemed to learn at school, but never learned. But even if in this case it turned out that there is no answer to your question anywhere, they enter the battle best forums Internet:

Cyberforum - in my opinion, the most popular Russian-language IT forum, here you can find answers to questions, and not only in the field of programming;
Programmers forum - a large Russian-language forum;
Searchengines is a notorious forum but specializes more in web programming;
Stack overflow - and I'm not afraid of these words, this is the most popular IT forum in the world, you will find answers to almost all your questions here;
Dev shed is also a large English forum;
Quora is not a coding forum, but there is a good chance that you will get an answer from a real professional.

Forums are, of course, not the only way to get answers to your questions. In their practice, programmers everywhere work with the official documentation the language in which they write. It describes how certain classes and interfaces work, sometimes the documentation is the only source that can help resolve issues, because it is only at the initial stage that everyone has similar questions and you can easily find ready-made solutions, but the further you get into the jungle , the harder and harder it is to find answers, so you have to rely on your, I hope, already smart head.

Compiling the code

I have already written quite a lot, of course, it is difficult to cover such a large topic within the framework of one article, but I think the first steps have already been taken and they should evoke the appropriate thoughts in you. I think this is only the first article in the series "How to become a programmer" and, accordingly, "why?", If you are at a crossroads and do not yet know which path to take. Next time I will touch on more materially interesting things, it's no secret that programmers are not poor people, and we'll see where and how much they get next time.

Finally, for those who want to really become a programmer, I wish you to take the bull by the horns, gather all your will into a fist and do what you like. It has already been said a thousand times before me, but I repeat, the main thing is desire and work. Then everything will work out for you. Remember the most important thing: perceive the study of programming languages and various technologies not as an end, but as a MEANS. Just imagine the possibilities that open up before you. Maybe you will become one of those who change the world in real time. So good luck and thanks for watching!

Video bonus

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We are used to quick access to information and its equally rapid absorption. We prefer five-minute videos to deep lectures and short articles to books. I will not say that a good book on programming will replace any article, it is not. And certainly it will not replace practice. Nevertheless, a real understanding of the basics of programming came to me personally after I, having solved hundreds of problems on a programming course and read a ton of articles, began to study theory from books in parallel and went deep into them. I've been looking for my personal "best Java tutorial for beginners" for quite some time. Below are a few books that have been useful to me to a greater or lesser extent at different stages of my studies.

"For the little ones"

You can start reading the next two books at the start of your studies, in parallel with the video, or, if you are studying on JavaRush, along with the first levels. They, especially the first one, are suitable for people with zero programming background.

Head FirstJava

I started with this book, not because I like it the most, but because it is the simplest. This book, in the opinion of so many programmers, is the best tutorial Java from scratch. Moreover, it is truly and completely “from scratch”, that is, it is suitable for those who are just starting out and do not quite understand what kind of beast this is - programming. She came to me too late. I think that's why I couldn't appreciate it. “Just reading” it was very pleasant, but I had to look for something specific in it for a long time. The material there is presented vividly, but rather superficially (because from scratch!) And there are simply no many topics and necessary explanations. But my friend, to whom she inherited, was delighted with her and shouted that this was not just the best Java textbook for beginners, but a world masterpiece and this is how complex material should be presented. Advantages:

The best Java tutorial from scratch, for complete dummies, written in a living language;
Cool illustrations and humor;
Explanations with real life examples.

Disadvantages:

Too much "water" for those who have already entered the topic;
Not always successful puzzles and exercises.

Herbert Schildt. Java 8 Beginner's Guide

After flipping through this tutorial, I thought it would be good for those who like a more traditional presentation of the material than in Headfirst, and at the same time they are looking for a tutorial from scratch. In some places, the presentation in the book is very detailed, reminiscent of extended and translated documentation with good illustrative examples. Sometimes, as for me, the author crosses the line, and starts chewing too much, it becomes boring to read ... and suddenly - a somersault - and some rather difficult place slips almost instantly, and you are completely bewildered trying to understand what and where you missed. However, there aren't too many places like this in the book, and I know people who think the Beginner's Guide is the best Java tutorial for those who don't know anything yet. Personally, it seemed to me not very smooth. Let's say I start parsing collections, and instead of a human explanation, they slip me the task of creating a Set on my own based on arrays. Cool task, but I would like to get a better understanding of what standard collections are first! Although this book, like the previous one, is considered a primer for beginners, my experience as a teacher suggests that it is only good in conjunction with other materials: the humanities switcher will not find everything simple and understandable. Best of all, the "Beginner's Guide" is suitable for someone who, at the very least, taught programming (for example, at the university), scored on it a long time ago, and at the same time he likes the author's presentation style. Advantages:

Traditional thoughtful presentation of the basics;
Good examples.

Disadvantages:

There are "jumps" from "too chewed" to "left out";
It's boring in places.

By the way, Herbert Schildt has another well-known book on programming - Java 8. The Complete Guide. This is a completely different textbook, more fundamental. Let's go to him.

References and extended guides

The books in this section will be useful to those who have already got involved in the full and are looking for books for a better understanding of theory and practice.

Herbert Schildt "Java 8. The Complete Guide"

I decided to download this book from the Internet in order to evaluate it, and then - to buy or not to buy. No joke, 1300 pages of text! Well, the price is impressive no less than the volume. I did the same with Kay Horstmann's two-volume Professional's Library (more on that below). Looking ahead, I will say that I opted for the second one. Why? Because in the book "Java. The Complete Guide, I saw the same shortcomings as in the Beginner's Guide. Sometimes it is chewed, sometimes it is crumpled, but at the same time it is not just crumpled, but somehow verbosely crumpled. This is probably the author's style, and I think someone will like it, or rather, in terms of thinking. All in all, "Java 8. The Complete Guide" is a good reference for Java. But personally, I liked the presentation of the same topics better in another book. Advantages:

Complete guide. It seems to have all the topics that a beginner needs to know, and not just a beginner.
Detailed explanations.

Disadvantages:

Lots of water (but some might like it!);
Russian translation is not the best.

Java. Professional's Library, Kay S. Horstmann, Gary Cornell

The books of Schildt and Horstmann are often compared to each other. Both have loyal fans. For me, it is Horstmann's two-volume book that is the best Java textbook. It also became a reference book for me at the initial and intermediate levels of JavaRush. When I did not understand some topic, I mostly climbed into Horstmann, and he clarified a lot. The book covers everything from syntax to multi-threaded programming, application localization, and working with XML. And don't let the name "Professional's Library" scare you (that's what scared me off), the basics are sorted out pretty well here. In addition, it is useful to re-read it periodically to refresh and streamline knowledge. They say that even professionals find something useful in it… I don't know. Become a professional - tell me! Advantages:

With an impressive number of pages - little water (unlike Schildt).
Contains everything a beginner needs.
Reveals Java 8.
Good presentation of topics on collections and generics.
Pairs very well with JavaRush. Get to the topic, solve problems, at some point you don’t understand something - watch Horstmann, try again.

Disadvantages:

Some may think that the book is a bit dry;
No practice;
Russian translation with mistakes.

Java. Programming Methods. Blinov, Romanchik

Once I read on the forum that there is such a book "Industrial Programming", and it has good problems. It turned out - they did not lie. I found a PDF copy of it on the Belarusian EPAM website. There, the edition is not the newest (on Java 6), but the book is written as a solid university textbook, that is, in some places the presentation is somewhat ponderous, academic. BUT! There is really very good compilation Java programming tasks, as well as test tasks. It is said that EPAM interns learn from this book, and it has also been adopted by many offline Java courses.

There, the approach to tasks is a little different from that of JavaRush, that is, on average, the tasks here are a little more complicated and each of them is something like ... not a mini, but a micro-project. So I recommend it even to students of JavaRush, since I consider the disadvantage of the practical side of the course to be that all the tasks in it are already fully designed and there are too many tips. Let's say the OOP problems from this collection helped me to understand this very OOP very well, along with the books of the "enduring classics", which I write about below. The book is written as if for future “rowers”, therefore, it describes Hibernate technologies for developing distributed systems, as well as HTML basics, XML, JavaScript. "Industrial Programming" - if not the best Java tutorial, then a very good one tutorial. But you need to come to it already prepared. Let's say after a dozen or two levels of JavaRush. Later, I discovered its newer and revised edition, already under the name "Java. Programming Methods".

Advantages:

Excellent selection of tasks and test tasks;
There is an official free version(I believe that it is official, since it is not on some root tracker, but on the EPAM website);
Comparison with C++.
An opportunity to understand what is going on in the EPAM internship.

Disadvantages:

Too fundamental. But for repetition with practice - suitable.
No Java 8.

Timeless classic

The books that I write about below can be called sacred texts for beginners and continuing Javiists.

Effective Java by Joshua Bloch

This is just a treasure, not a book, and it is dedicated to the basic principles of the language from one of its authors, Joshua Bloch. Most likely, you have already used its libraries (in Java Collection, for example). I’ll make a reservation right away: complete beginners, except for some geeks-speedlerners, do not need the book Effective Java. First, it’s better to learn the syntax, and get at least some programming practice, so to speak, “to fill the bumps”, and then take on the creation of Joshua Bloch. The book will be useful for those who want to truly understand Java, form the right approach when programming in this language, understand not only how to do it, but what else needs to be done that way. And also for those who want to deeply understand OOP (in principle, these are interconnected things). This book is the best Java textbook for object-oriented programming. Advantages

Brilliant presentation of material on the subject of OOP.
The best programming practices are given.
The author knows Java very well from the inside.

disadvantages

So far, there is no translation of the latest edition of the book (third).

Java Philosophy, Bruce Eckel

The title of this book speaks for itself. This is another "alpha and omega" for everyone who wants to know Java! In this book, you will find good and clear examples, and from them you will understand how Java works. It's hard for me to say which of the two books - "Java Philosophy" or "Effective Programming" - is better. I would say that Eckel is somewhat more loyal to beginners, while Bloch requires some kind of experience. I first read a chapter from Java Philosophy when I was just starting to learn JavaRush (it seems that at one of the early levels it was listed in the recommended). Then she didn't come to me. But after level 10 or 12 - it was a song! And, I will say, a very useful song. I returned to it later, when I came to Effective Programming. Let me put it this way: let Bloch and Eckel talk about the same thing, but in different ways, and give different examples. Advantages

Deep exposition of Java principles from a professional;
It will be good for those who are switching from other languages - there are many comparisons with C ++, for example.
It seems to me that you can start reading it from level 10, but Eckel - a little later.

disadvantages

Very unsuccessful Russian translations;
The lack of a new edition of the book in Russian.

Brief conclusions

The best Java tutorial from scratch for those who don't know anything at all - Head First Java;
The best Java textbook and handbook is The Pro's Library. And, of course, the Oracle documentation.
The best collection of Java programming tasks - JavaRush. Well, among the books - “Java. Programming Methods.
The best enduring classics are "Java Philosophy" and "Effective Java". This is a must read for everyone who decides to understand everything for real, for a deep understanding. But it is better to read them gradually and with an arrangement.
Additional conclusion: there is a possibility - read in English. Russian translations are mostly very weak.

English version of this post: top books about Java for beginners on CodeGym

I have been programming in Java for 7 years now. But at work, you often have to train a new generation. In this regard, I decided to make some cheat sheet, which, I hope, will be useful for Habrchan. If someone can help supplement the information from this article with something, then write! So:

Essential Resources for Initial Learning

www.javable.com - a site with articles and a tutorial on Java. Everything is mostly in Russian.
www.exampledepot.com is a very useful resource where brief examples using classes for certain packages
java.sun.com - you can't do without the original source. For any Java programmer, JavaDoc should be the ultimate truth. Also here you can find a series of tutorials on all possible topics.

Basic Java packages

Below is a list of Java packages that a programmer should be fluent in. It is recommended to get acquainted with them both by JavaDocs and with the help of www.exampledepot.com. All packages are arranged in the recommended order for study. So:

java.lang is the foundation of the basics. Each class in this package needs individual attention.
java.io - no program can do without I/O operations.
java.util - The package basically contains everything you need to work with collections: Collection, Enumeration, Set, List, Map, etc. etc.
java.net - contains the main classes for working with the network.
java.text - everything you need to format text
java.lang.reflect - Java wouldn't be Java if it wasn't for Reflection. Reflection blurs the line between data and code.
javax.sql - everything you need to work with databases
javax.xml.* , org.w3c.dom.* , org.xml.sax.* - working with XML is simply unthinkable without these packages

Resources to broaden your horizons

onjava.com - sooner or later, all the news from the Java world ends up here
www.javaspecialists.eu - a resource useful for both beginners and advanced programmers, as it contains many articles about the intricacies of working with Java.
www.theserverside.com - It is recommended to subscribe to the RSS, as very interesting things about Java often slip through.

Java Libraries Everyone Should Know

Java doesn't end with just knowing the features of the JSDK. To feel comfortable, you need to know about a dozen or two third-party libraries used by Java programmers everywhere. So let's start with the basics:

Commons Lang - what is "forgotten" to include in the JDK
Commons Math is a great addition to java.math
Commons Logging - logging must be competent. For System.out.println to display logs, novice programmers should chop off their hands after a week of training.

From the author: approximately 3 billion smartphones, 125 million television sets and every single Blu-ray player in the world run on this programming language. This language regularly wins prizes in the ratings of software developers and is the most popular among the largest IT companies. It is a technical phenomenon and works on absolutely any device, which is consistent with its “write once - run everywhere” (WORA - “write once, run anywhere”) principle. Who guessed, raise your hands! Of course, this is the Java language. And today I will reveal all the cards to you and tell you the whole truth about how to become a Java programmer from scratch! Get comfortable!

Some facts about Java

In order not to bore you with long theoretical sermons, I have grouped some information about Java into a list, after reading which you will get an insight into understanding what kind of language it is and what its role is in the wild nature of programming:

Java is a "fancy" and cross-platform programming language. It works on any device with any operating system. All Google and Android applications are written on it. In no other language will you find so much information and learning materials;

the official release date of the language is May 23, 1995. It was originally conceived for an interactive cable television, but "did not grow together." Java was invented by Sun Microsystems, which was acquired by Oracle in 2010;

Many people confuse Java and JavaScript. If you want to engage (websites, web applications), then choose the second option. Java is a back-end, i.e. development of application stuffing;

JavaScript. Fast start

is an object-oriented programming language whose code is executed by a special java virtual machine(JVM). In the US, about 9 out of 10 computers have this same JVM installed;

The language takes its name from a brand of coffee, which is why the official emblem features an inspiring cup.

Are you still here or did you run to make yourself a cup of fragrant coffee? Then let's continue talking about how to become a Java programmer.

Installing the software environment

Oddly enough, some people have problems already at the installation stage. software environment Java. To do this, go to the official website of the developer company - Oracle. Link to current version you will see at the very top of the site. You need Java SE (Standard Edition) and Java Development Kit - a set of development tools. Please note that there are different distributions for different Operating Systems.

Let's say we have Windows. We go to the "System Properties" and see what kind of system we have - 32-bit or 64-bit. Download the file that suits us in terms of bit depth. If you choose the wrong distribution, you will get an error when compiling the code. After confirming the Accept License Agreement, click the download button.

What is the Java Developer's Toolkit?

Most of the time a programmer spends in an IDE (IntelliJ IDEA, Eclipse, WebStorm, NetBeans). IDE is an integrated development environment, a special interface for programming. It not only helps when writing code, but also makes it easier to use other programming tools. Some advise those who want to become a Java programmer from scratch to write their first programs in a regular notepad or Notepad++.

Maybe elementary programs should be written in an editor. But in the future, I still strongly recommend using the IDE. It has the functions of code completion, syntax control, jump to method definition, and many others. And intelligent hints will save you from having to remember all the names of functions and their parameters, which is simply physically impossible.

At teamwork When several people work on the same program at once, it is imperative to use the so-called version control system (Perforce, Git, Subversion, etc.). However, version control systems are very convenient when working alone.

An example algorithm for learning Java

Learning the basics of the Java language. The first step is to develop skills logical thinking and the study of fundamental concepts of programming language syntax. Armed with a book, article, or video tutorial, learn how to use an IDE or a text editor to create simple Java objects that contain various options behavior, depending on the input.

Analysis of the advanced features of the Java language. At this point, learn the syntax, libraries, and frameworks that will help you build more complex, hands-on applications. good programmer not only knows how to use various libraries, but also knows how they are arranged inside. In addition, concepts such as I/O operations, inheritance and abstractions, serialization, generic types, regular expressions, should not be an empty phrase for you.

JavaScript. Fast start

Learn the basics of JavaScript with a practical example of building a web application

Subtleties of programming. Never skimp on the documentation and jargon of Java programming. At this stage, you should already be "mutating" into a mature programmer. Communicate with Java gurus, which you will find in thematic forums and other environments where programmers gather. Show them your code, consult and advise others - "accumulate karma." You can even start your own blog, post snippets of your own code, and see what more experienced programmers have to say about it.

How to start programming?

For those who are going to become a Java programmer from scratch, I will tell you how to write your first program.
So let's open any text editor and write:

class HelloWorld ( public static void main(String args) ( System.out.println("Hello World!"); ) )

class HelloWorld(

public static void main(String args )(

System. out . println("Hello World!");

We save the file under the name HelloWorld.java. Please note that Java is case sensitive, so the words "helloworld" and "HelloWorld" are different. If the names of the file and class in the code differ, then the program simply will not start. In addition, it is important that the encoding is ANSI.

Now we have to compile the program using the javac compiler from the JDK. While we have not installed the development environment, we will compile using the command cmd lines by calling it from the start menu. In the window that appears, type cmd and press Enter.

If we saved HelloWorld.java to the Prog folder on drive C, then we enter the command:

cd C :\prog a

and press Enter. Thus, we changed the directory to the one where our program is located. Then we enter.

Education should not be a sacred cow, we are sure of it! It needs and can be changed. This is exactly what we did and developed the course Java programming Rush that is unlike any other online course. It does not contain long video lectures and a list of tasks that it is not clear who and how will check. But there is a clearly set goal, developed special means for study and set the result to be achieved.

Top 12 Features of JavaRush Lessons

Typically, online programming courses are textbooks or video tutorials. It's not like that with us. We have formed a cycle of short lessons on Java, filled them practical tasks and provided "smart" tools to check the correctness of the solution. And all this in the form of a consistent and integral course!

Boosting you as a programmer. These are not just Java lessons for beginners - this is an opportunity to consolidate the acquired knowledge in practice "here and now". You give short lectures, then solve a problem there and get a reward for it. This is logical and understandable. You will solve a wide variety of tasks. The most common tasks are writing code to solve a problem. But besides them, you will need to learn to read someone else's code, fix errors in it, improve it (refactoring), add new features. Sometimes you will be forced to watch interesting videos about IT people, and for those who teach, coding tasks will come in handy. Those who get far enough are waiting for big tasks, they are also mini-projects: by completing them, you will write several interesting programs more serious (small toys, online chat, and so on).

2. Java lessons, nothing more!

Java, and any other programming language, can take a very long time to learn. In order not to dig into the dense jungle at the very beginning of the journey, we removed from the course topics unnecessary for beginners, which are often filled with programming lessons. Only the bare essentials are left on JavaRush. And these are not empty words: this is the result of an analysis of hundreds of vacancies. So we are arguing that the course includes exactly those topics that a future Java Junior Developer needs to know in order to get a job. The process of becoming a Java Junior will take you from three months to one year, depending on how much time you devote to studying. It will be convenient to study at any time of the day or night: light and dark theme- choose any.

JavaRush light theme

Go to the "bright side" (if you want, of course!). All people are different. Some people find it comfortable to work with light text on a dark background, while others find it quite the opposite. We have taken into account the wishes of our users, and now you can switch to a light theme ("light background, dark text") in any section of JavaRush!

Upload date:2017-11-17T13:19:00

3. 500 mini-lectures and 1200+ practical tasks.

There is a lot of practice in this course. Lots of practice! The course contains 500 mini-lectures (these are short Java lessons) and over 1200 practical tasks. The vast majority of puzzles are small, but "thousands of them!". By solving them all, you will get the minimum experience necessary to get your hands on and deal with more serious problems. In addition, the course contains so-called "big tasks" (in fact, these are mini-projects) and useful videos.

4. Four quests, forty levels, tons of practical knowledge.

The course is divided into 4 quests, each quest is 10 levels that you need to complete. The first quest contains the basics of Java from scratch, the syntax of the language and a huge number of tasks on this topic. Among the tasks there are very simple ones, for the assimilation of the material covered, there are more difficult tasks, and for the solution of which you will have to run ahead and google. There are tasks of increased complexity for the most daring. You can "jump" to the next level only if you solve most of the tasks of the current level. If some of them do not lend themselves, they can be safely postponed for later. Thus, if you reach the end, you will get about 500 hours practical experience programming. Such a solid application for successful work Java Junior!

Quest JavaSyntax	For beginners. In this quest, Java tasks and lessons will help you learn the basic language constructs of the language (variables, conditional statements, loops, methods, classes, basic information about collections and objects)
Quest Java Core	In this quest, you will learn the basics of OOP, get acquainted with serialization and method overloading.
Quest Java Multithreading	Multithreading is the main word of this quest. But here we will talk not only about it, but also about the structure of the Object and String classes and much more. This quest, as well as the next one, can be studied at the same time.
Quest Collections	Collections are to a Java programmer what dynamite is to a prospector. You need to know them, but it is important to understand how to use them. Also in this quest there is a lot of information about working with JSON, Git, RMI, DynamicProxy and a little bit about JavaScript

5. Online internship and interview preparation

Starting at level 35 of JavaRush, and even better - after level 40, students can take a special online internship, during which they will receive useful Java lessons on advanced technologies and make a serious project that can be added to the resume. And at this stage, towards the end of the training, our specialists will help you with the preparation of a resume. Also, various articles on employment and success stories of those who have already found a job will come in handy. These guys often write interesting materials for us and willingly share their successful and unsuccessful experiences with other students.

6. Solving problems where it is convenient.

You can solve problems and send them for verification:

right on the site. JavaRush is not just Java lessons for beginners with assignments. It is also an interactive environment for solving problems. Handy: You're working through an example in a lecture, and now you need to complete a very similar task. You can do such small tasks to consolidate the material right on the JavaRush website: for this we developed the WebIDE tool;
for tasks that require more time, we recommend using the professional IntelliJ IDEA development environment. To make it convenient for JavaRush students, we have created a functional plugin for this popular IDE. The plugin allows you to get the condition of the problem in one click and just as quickly and easily send the solution for verification;
after being sent for verification, the solution code you typed is synchronized if you work from different computers / tablets.

7. Instant verification of solutions.

Students are familiar with the situation firsthand: the task is ready, but the teacher does not check it in any way. This is exactly what happens in face-to-face courses, where one teacher who teaches Java programming lessons from scratch deals with two dozen students at once (or even more) and he simply has no time to check the tasks of each of them. On JavaRush, you will find out about the correctness/wrongness of the solution instantly. You:

write a solution in Java;
click on the "verify" button: your solution is sent to the JavaRush server!
a second - and you get information about the correctness of your decision and recommendations in case of errors.

It is very difficult for a beginner to catch logical errors that the compiler does not miss. Are you solving a problem but don't know if the solution is correct? No problem: the JavaRush recommendation system will point out where the error is hidden in your solution.

9. Help page.

Even if the JavaRush recommendation system did not help you and you are firmly stuck in trying to solve some difficult task, take a look at the help page - on this service you will not be left alone with the problem. One of the students or the JavaRush team will definitely help you.

10. Interest groups and cities.

Community - interest groups where you can read articles by other students and industry experts, write your own topics, participate in contests, comment and discuss Java or near-programming topics.

11. Social networks and JavaRush

Subscribe to JavaRush groups on VK and Facebook. In them you can discuss IT news, Java programming lessons, share achievements with friends, watch Java video lessons or ask for help. In contact with: