Lessons

You've reached Level 40

"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 ..."

"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 ..."

"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 ..."

"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 ..."

"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 ...."

"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 Well, the Date class has been outdated of a while."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 ..."

"Hi, Amigo!" "Let's continue our lessons on how to google." "Here are some exercises ..."