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  • 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
    Available
  • Send email

    Java Collections
    Level 10, Lesson 5
    "It's me—again. And again, I have a little surprise for you." "Today I'm going to teach you how to send email using Java." "Let's start with the good news: Java has a native library for working with email." "The bad news is that this library is part of Java EE, not Java SE." "Java EE is an extended version of JavaSE, which includes classes needed for niftier applications ..."
    Available
  • Tasks | Level 10 | Lesson 6

    Java Collections
    Level 10, Lesson 6
    Available
  • Socket

    Java Collections
    Level 10, Lesson 7
    "Hi, Amigo!" "Hello, Rishi!" "The topic of today's lesson is sockets." "You already know that every computer on the network has its own unique IP address." "Yep." "Now imagine you have several computers, each running a dozen programs that access the Internet: Skype, ICQ, etc." "And these programs want to communicate with each other ...."
    Available
  • Tasks | Level 10 | Lesson 8

    Java Collections
    Level 10, Lesson 8
    Available
  • Date, SQL date, timestamp

    Java Collections
    Level 10, Lesson 9
    "I remembered that I wanted to tell you a little about working with dates." "You already told me that Java has the Date class, and I can use that class to work with dates." "Hmm. Well, the Date class has been outdated of a while." "Now it's recommended to instead use the Calendar class, which has a getTime() method that returns the current date." "This is a Calendar object is usually created ..."
    Available
  • Tasks | Level 10 | Lesson 10

    Java Collections
    Level 10, Lesson 10
    Available
  • Learning to google | Level 10 | Lesson 11

    Java Collections
    Level 10, Lesson 11
    "Hi, Amigo!" "Let's continue our lessons on how to google." "Here are some exercises ..."
    Available
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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.
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