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Java Essentials | Codefinity
Track
Certificate

Java Essentials

4.7+
77 reviews
Beginner
Embark on a comprehensive journey into the realm of Java programming. Whether you're just starting or have some coding experience, this track will equip you with the knowledge and skills to excel as a Java developer. Show more
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What you will learn
  • Grasp the fundamental concepts of Java including its syntax, operations, and data types.
  • Understand how to work with loops, arrays, and strings to manage data and control flow.
  • Recognize the role of Java in backend development and leverage its advantages for building robust applications.
  • Address common issues such as memory types, null-pointer exceptions, and manage string manipulation using StringBuilder and equals().
  • 141 chapters
  • 17 hours
  • 268 tasks
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Learning track content
Module 1 / Java Basics
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?
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.
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.
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.
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?
Module 2 / Java Extended
Throughout the following lessons, you will become acquainted with the inner workings of Java and discover optimized methods to work with the language. This will involve exploring Java's operations at the computer level and adopting best practices for utilizing familiar concepts efficiently.
You have already encountered methods, and now you will finally understand what they actually are, how to create your own methods, and how to work with them. You will learn to return the desired values from methods and significantly improve the quality and logic of your code.
Get ready to dive into the world of String and discover more about its inner workings and methods. We'll explore the fascinating features that String offers, including the ability to customize the "toString" method, split strings into substrings, and utilize indexes for efficient data retrieval. Let's embark on this exciting journey to expand our knowledge of String manipulation!
Finally, we have reached the topic of classes. It is an incredibly important subject that will make Object-Oriented Programming (OOP) seem much simpler once you grasp it. In this section, you will learn how to create your own classes and their objects. You will be able to use methods of one class within another and establish relationships between them. Get ready to discover many interesting concepts and delve deeper into OOP programming!
In this section, we will continue our study of classes. We will explore more advanced usage of class objects and learn more about access modifiers and how to use them effectively. We will also delve into getters and setters, as they are considered best practices in programming.
Finally, we can start learning Object-Oriented Programming (OOP) in Java. It will be challenging, but I'm confident that you'll succeed! In this section, we'll cover all the principles of OOP, explain why OOP is important. You'll learn how to inherit classes, overload and override methods, encapsulate data from other classes, and work with abstraction. Moreover, you'll reinforce all these theoretical concepts with practical exercises, working on assignments in your IDE. You'll gain a wealth of knowledge, both practical and theoretical, so let's get started!
In the previous section, we concluded that all Object-Oriented Programming is mainly built on abstraction. However, an abstract class has one significant limitation – you can inherit from only one abstract class. But what if we need more? Interfaces come to the rescue. In this section, you will learn what an interface is, why it's necessary, how to use it correctly, and you will continue practicing Object-Oriented Programming. Let's turn you into a professional!
Module 4 / Java Data Structures
In this section, you will be introduced to the concept of a list and the most commonly used types of lists. You will learn how to create them and use various lists correctly.
This section will introduce you to data structures that are not used as frequently but are still valuable. Data structures like set, stack, queue, and deque will help you better understand how Java works and various applications with databases. There will also be plenty of practice to reinforce both new and previous material.
This section will introduce you to a data structure called a map. This data structure operates on the principle of key-value pairs, meaning we retrieve data based on a specific key. This allows us to build various data structures that closely resemble databases. You will also learn about concepts such as HashCode and explore data structures like HashMap and HashSet.
The final touches on mastering the basic data structures. In this section, we will talk about another data structure - enum, and also explore how to work with the flow of information in the data structure using the Stream API.
Module 5 / Java JUnit Library. Types of Testing
Let's talk about types of testing and which testing methods developers use. You will learn about the stages an application goes through before being delivered to the client and the specific tests you will need to write.
In this section, we're going to dive into unit testing — you'll get the rundown on its structure in Java and the ins and outs of crafting them the right way. Setting up your IDE, importing necessary libraries, and lots of hands-on practice.
In this section, we will enhance our coding skills by dealing with errors that can also be caught in unit tests. When testing an application, you may come across various errors, and sometimes they should be turned into exceptions. I will explain how to catch exceptions in your code, test them, and handle them properly.
Requirements
  1. A computer with a browser - all browsers are supported.
  2. Your enthusiasm to enhance your tech skills.
  3. Everything else needed to start learning and practicing is already included in this course.
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Ruslan Kravchuk
The main thing is to learn and not give up
The material is good, there is a lot to learn, all in order to become better and the main thing is to learn what you want....
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Thanks to them I'm learning a lot faster because they help you to understand everything from scratch. It's the best website that helps people with no background in IT...
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great course for beginners
great course for beginners, they test your knowledge in every lesson...
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Codefinity is a comprehensive learning…
Codefinity is a comprehensive learning tool to help you develop your skills as a software engineer or data scientist. The exercises are fun and a good way to sharpen your skills...
Thibault
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First time learning how to code and successfully doing so with codefinity - thank you...
Adrien Morel
Well designed for total beginners
Well designed for total beginners, incremental progress and makes me feel confident....
_Gracy
it's simply perfectly well explained
it's simply perfectly well explained! so far I have not experienced any difficulty because everything is so well managed...
Ruslan Kravchuk
The main thing is to learn and not give up
The material is good, there is a lot to learn, all in order to become better and the main thing is to learn what you want....
Matteo Comune
Thanks to them I'm learning a lot…
Thanks to them I'm learning a lot faster because they help you to understand everything from scratch. It's the best website that helps people with no background in IT...
Yuliana Cadavid
great course for beginners
great course for beginners, they test your knowledge in every lesson...
Elpunzon
I am enjoying my Codefinity experience…
I am enjoying my Codefinity experience learning Python. The self-paced way of learning is great because I can fit it into my schedule...
Alexandru Alexandru
Is nice to learn from codefinity
Is nice to learn from codefinity. Its easy and have good examples on what I learned here...
jacob Templet
Easy to follow along with and provides...
Easy to follow along with and provides challenge in my every day life. The challenge keeps me wanting to learn day after day...
Elan
Codefinity is a comprehensive learning…
Codefinity is a comprehensive learning tool to help you develop your skills as a software engineer or data scientist. The exercises are fun and a good way to sharpen your skills...
Thibault
First time learning how to code
First time learning how to code and successfully doing so with codefinity - thank you...
Adrien Morel
Well designed for total beginners
Well designed for total beginners, incremental progress and makes me feel confident....
_Gracy
it's simply perfectly well explained
it's simply perfectly well explained! so far I have not experienced any difficulty because everything is so well managed...
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  • Access to 85+ top-rated courses
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  • Certificates of completion
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