CodeGym
Promotion
CodeGym University
Learning
Courses
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
  • My Progress
  • Courses
  • University
  • Quest Map
  • Lessons
  • Tasks | Level 9 | Lesson 9

    Java Collections
    Level 9, Lesson 9
    "Hi, Amigo. Here, take this interesting task ..."
    Available
  • Code style

    Java Collections
    Level 9, Lesson 10
    "Just two small items left." Magic trick #6: Surround with."For example, suppose we want to wrap some code in a try-catch block. IntelliJ IDEA also has a key combination for this: Ctrl+T.." "Just select some code, e.g. the same println method in the printAddress method — and press Ctrl+T. Here's what we get ..."
    Available
  • Learning to google | Level 9 | Lesson 11

    Java Collections
    Level 9, Lesson 11
    "Hi, Amigo!" "Let's continue our lessons on how to google." "Here are some exercises ..."
    Available
  • Useful links from the Professor — 39

    Java Collections
    Level 9, Lesson 12
    "Hi, dear friend! I don't want to be sentimental, but this is the last time we will meet..."
    Available
  • How does caffeine keep us awake?

    Java Collections
    Level 9, Lesson 13
    "Hi, Amigo!" "Hi, Julio." "It's good to see you. How are you feeling?" "I feel energized. I've solved nearly every task in this level." "If you've solved everything, then it's time to watch a video ..."
    Available
  • Interview questions | Level 9

    Java Collections
    Level 9, Lesson 14
    "Hi, Amigo!"
    Available
  • Big task: ATM software

    Java Collections
    Level 9, Lesson 15
    "Hi, Amigo!" "Hello, Captain Squirrels, sir." "You're a good student. Well done, soldier!" "Today you have a new secret mission: master finances." "Hooray!!! I already know what I'll spend the money on!!!" "Don't relax yet, soldier! Mastering finances means writing a new secret ATM program ..."
    Available
  • You've reached Level 40

    Java Collections
    Level 10, Lesson 0
    You've reached Level 40
    Available
  • IP-address, domain, URL

    Java Collections
    Level 10, Lesson 1
    "Hi, Amigo!" "Hi, Bilaabo!" "What new thing will you tell me about today?" "Many things. But to start, I think we'll discuss working with a network and the Internet. Interested?" "Yep. The Galactic Internet is super cool." "Okay, but let's start with some history. At the beginning of the 21st century, the situation was this…" "Every computer connected to the Internet had a unique number ..."
    Available
  • HTTP, port, request, response, REST

    Java Collections
    Level 10, Lesson 2
    "The HTTP protocol was designed for exchanging files, so it has several built-in commands for this, which are often called methods." "Here they are: GET, POST, PUT, DELETE, OPTIONS, HEAD, PATCH, TRACE, LINK, UNLINK, CONNECT." "I'll tell you about the 4 main methods." "The GET method is designed for receiving a file based on a request (URL). A file request assumes that nothing ..."
    Available
  • Download file

    Java Collections
    Level 10, Lesson 3
    "Hi, Amigo!" "Hi, Ellie!" "You seem very pleased with yourself today." "Heh, Bilaabo got sick." "So he couldn't explain a bunch of interesting, useful, and needful things to you. It's time to put on your big-robot pants." "Uh-huh. I promise to figure it all out myself. Bilaabo gave me a link." "Okay, good. Then I'll tell you something interesting." "Namely, how to download videos from the Internet ..."
    Available
  • Tasks | Level 10 | Lesson 4

    Java Collections
    Level 10, Lesson 4
    Tasks | Level 10 | Lesson 4
    Available
  • 1
  • ...
  • 47
  • 48
  • 49
  • 50
  • 51
  • ...
  • 61
Learn
  • Registration
  • Java Course
  • Help with Tasks
  • Pricing
  • 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 a Java developer’s career.
Follow us
Interface language
English
Deutsch Español हिन्दी Français Português Polski বাংলা 简体中文 मराठी தமிழ் Italiano Bahasa Indonesia 繁體中文 Nederlands 日本語 한국어 Bulgarian Danish Hungarian Basa Jawa Malay Norwegian Romanian Swedish Telugu Thai Українська Filipino Turkish Azərbaycan Русский Vietnamese
Programmers Are Made, Not Born © 2025 CodeGym
MastercardVisa
Programmers Are Made, Not Born © 2025 CodeGym