CodeGym
Promotion
CodeGym University
Learning
Course
Tasks
Surveys & Quizzes
Games
Help
Schedule
Community
Users
Forum
Chat
Articles
Success stories
Activity
Reviews
Subscriptions
Light theme

Lessons

  • Reviews
  • About us
Start
Start learning
Start learning now
  • Quest map
  • Lessons
All quests Java Syntax Java Core Java Multithreading Java Collections JSP & Servlets Module 3. Java Professional Module 4. SQL & Hibernate Module 5. Spring Spring
All levels Level 0 Level 1 Level 2 Level 3 Level 4 Level 5 Level 6 Level 7 Level 8 Level 9 Level 10 Level 11 Level 12 Level 13 Level 14 Level 15 Level 16 Level 17 Level 18 Level 19 Level 20 Level 21 Level 22 Level 23 Level 24 Level 25 Level 26 Level 27 Level 28
  • You've reached Level 32

    Java Collections
    Level 2, Lesson 0
    You've reached Level 32
    Available
  • RandomAccessFile, etc.

    Java Collections
    Level 2, Lesson 1
    "Hi, Amigo!" "Hi, Bilaabo! How's life?" "Great. Yesterday, I tried getting rid of some parasites, but so far I haven't had much success. And then I had to spend the night in the garbage can again." "So... is everything still great?" "You could say that." "Good. So what do you have for me today?" "Today I will tell you about the RandomAccessFile class ..."
    Available
  • Tasks | Level 2 | Lesson 2

    Java Collections
    Level 2, Lesson 2
    "Hi, Amigo!"
    Available
  • StringReader, StringWriter

    Java Collections
    Level 2, Lesson 3
    "Hi, Amigo!" "Hi, Ellie!" "Today I want to tell you about the StringReader and StringWriter classes. In principle, there won't be much that will be new to you, but sometimes these classes are very useful. But, at the very least, I want you to know that they exist." "These classes are the simplest implementations of the abstract Reader and Writer classes. And they are basically similar to FileReader and FileWriter. However, unlike those ..."
    Available
  • Tasks | Level 2 | Lesson 4

    Java Collections
    Level 2, Lesson 4
    Available
  • BufferedReader, BufferedWriter

    Java Collections
    Level 2, Lesson 5
    "It's me again." "Hi, Ellie!" "Today I'd like to tell you all about BufferedReader and BufferedWriter." "You already told me about them. They really aren't that complicated." "OK. Then tell me how BufferedReader works." "BufferedReader is like a 110/220V converter." "You have to pass to the BufferedReader constructor the Reader object that data will be read from. A BufferedReader object reads big chunks of data from the Reader ..."
    Available
  • Tasks | Level 2 | Lesson 6

    Java Collections
    Level 2, Lesson 6
    "Ha-ha, Amigo. Check out what I came up with for you ..."
    Available
  • DynamicProxy

    Java Collections
    Level 2, Lesson 7
    "Hi, Amigo." "Hello, Rishi." "Today I will explain a new and very interesting topic to you: dynamic proxies." "Java has several ways to change the functionality of a particular class…" "The first method is inheritance." "The easiest way to change a class's behavior is to create a new class that inherits the original (base) class, and override its methods. Then, instead of using the original class, you use the derived class. For example ..."
    Available
  • Tasks | Level 2 | Lesson 8

    Java Collections
    Level 2, Lesson 8
    "Hi, Amigo! I came up with a couple of interesting tasks for you." "They can only be completed in IntelliJ IDEA. Take a look at these interesting conditions…"
    Available
  • RMI

    Java Collections
    Level 2, Lesson 9
    "Hi! And one more happy topic: RMI. RMI stands for Remote Method Invokation. In other words, RMI is a mechanism that allows an object from one Java machine to call methods on objects from another Java machine, even if they are on different computers, in different countries, or on different sides of the globe ..."
    Available
  • Tasks | Level 2 | Lesson 10

    Java Collections
    Level 2, Lesson 10
    "Hi, Amigo! I have a task, but I'm not going to give it to you." "Okay, I'm kidding. Go do your task in IntelliJ IDEA ..."
    Available
  • Learning to google | Level 2 | Lesson 11

    Java Collections
    Level 2, Lesson 11
    "Hi, Amigo!" "Let's continue our lessons on how to google." "Here are some exercises ..."
    Available
  • 1
  • 2
Learn
  • Registration
  • Java Course
  • Help with Tasks
  • Pricing
  • Game Projects
  • Java Syntax
Community
  • Users
  • Articles
  • Forum
  • Chat
  • Success Stories
  • Activity
  • Affiliate Program
Company
  • About us
  • Contacts
  • Reviews
  • Press Room
  • CodeGym for EDU
  • FAQ
  • Support
CodeGym CodeGym is an online course for learning Java programming from scratch. This course is a perfect way to master Java for beginners. It contains 1200+ tasks with instant verification and an essential scope of Java fundamentals theory. To help you succeed in education, we’ve implemented a set of motivational features: quizzes, coding projects, content about efficient learning and Java developer’s career.
Follow us
Interface language
Programmers Are Made, Not Born © 2023 CodeGym
MastercardVisa
Programmers Are Made, Not Born © 2023 CodeGym
This website uses cookies to provide you with personalized service. By using this website, you agree to our use of cookies. If you require more details, please read our Terms and Policy.