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Brian
Java Developer
20 July 2018 7:20
Old Level 04
Old Level 04
Brian
Java Developer
20 July 2018 7:20
Old Level 03
Old Level 03
Professor Hans Noodles
Java Developer
19 July 2018 14:19
Arrays class and its use
Hello again! :) In the last lesson, we got to know such a data structure called an array. We learned how to create them and fill them with data. And we looked at how they're stored in memory. Today we'll look at some tasks and examples of working with arrays that you will often see in real work ...
Professor Hans Noodles
Java Developer
19 July 2018 13:26
Something about arrays
Hi! Previously in your training, we've worked with single objects (and primitive types). But what if we need to work with a whole group of objects instead of just one? For example, say we want to create a list of birthdays of all employees at our company. We'll benefit from a special data structure called an array ...
Milan Vucic
Java Developer
19 July 2018 12:22
More about the garbage collector
Hi! In the last lesson, we first became acquainted with Java's built-in garbage collector and got a rough idea of how it works. It works in the background while your program is running, collecting unnecessary objects that will be deleted later. Thus, it frees up memory that can be used to create new objects in the future ...
John Selawsky
Java Developer
19 July 2018 12:04
Object lifecycle
Hi! I think you wouldn't be very surprised if I told you that your computer has a limited amount of memory :) Even your hard drive (which is many, many times the size of RAM) can get chock full of your favorite games, TV shows, and other things. To prevent this from happening, you need to monitor the current state ...
Vasyl Malik
Java Developer
19 July 2018 11:25
Ternary operator
Hi! Today's lesson won't be very long, but it will definitely be useful :) We're going to talk about the so-called ternary operator. Ternary means "composed of three parts". It is an alternative to the if-else control flow statement that you've already met. Let's give an example. Suppose someone decided...
Volodymyr Portianko
Java Developer
19 July 2018 9:01
Base class constructors
Hi! Last time we talked about constructors and learned a lot about them. Now we're going to talk about base class constructors. What's a base class?It has to do with the fact that in Java several different classes can have a common origin. This is called inheritance. Several child classes can have one common ...
Brian
Java Developer
19 July 2018 7:19
Old Level 02
Old Level 02
Jesse Haniel
Java Developer
18 July 2018 10:14
Numeric operators in Java
Hi! Today we'll consider a very important topic, namely, numeric operators in Java. In programming, numbers are everywhere. If you dig deep and remember high school, you may recall that a computer represents all information in a numerical format: combinations of zeros and ones, also known as binary code ...
Brian
Java Developer
18 July 2018 7:17
Old Level 01
Old Level 01
Brian
Java Developer
17 July 2018 7:14
Old Level 00
Old Level 00
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