Page 72 | Java blog - news about Java and tutorial articles on JavaRush

Зепп Бранниган Random EN
8 August 2023 10:14
How not to get lost in time - DateTime and Calendar Hello! Today we will start working with a new type of data that we have not encountered before, namely dates. What is a date, I think, it is not necessary to explain :) In principle, it is quite possible to write the current date and time i
08.08.2023
5420views
0comments
0
Зепп Бранниган Random EN
8 August 2023 10:14
HashMap in Java - what kind of map is this?Hello! Today we will talk about another data structure - Map. Its official Russian name is “associative array”, but it is not often used. The more common options are “dictionary”, “map”, or (most often) - slang anglicism “map” :) Inside Map
08.08.2023
7267views
0comments
0
Зепп Бранниган Random EN
8 August 2023 10:14
Collections in Java | Java Collections Hello! Over the past few lessons, we have made great progress in mastering ArrayList. However, during this time we performed only the simplest operations: deletion, insertion, output to the console. Of course, the list of challenges that de
08.08.2023
2380views
0comments
0
Зепп Бранниган Random EN
8 August 2023 10:14
Java ArrayList in pictures Hello! Today's lecture about will be easier on the one hand, and more difficult than the previous ones on the other. More difficult, because today we will look “under the hood” of 'a and study what happens to it during operations. On the ot
08.08.2023
1377views
0comments
0
Зепп Бранниган Random EN
8 August 2023 10:14
ArrayList class in Java Hello! In previous lectures, we analyzed in detail such a data structure as an array and examined common examples of working with them. But this data structure has a number of drawbacks. The answer to them in Java was the appearance of Arra
08.08.2023
10396views
0comments
1
Зепп Бранниган Random EN
8 August 2023 10:14
The Arrays class and its usage Hello again! :) In the last lesson, we got acquainted with such a data structure as (Java array), learned how to create arrays, fill them with data, and also learned how they are stored in memory. Today we will look at some tasks and exampl
08.08.2023
2349views
0comments
0
Зепп Бранниган Random EN
8 August 2023 10:14
Something about arrays in Java Hello! Earlier in the tutorial, we worked with singular objects (or primitive types). But what if we need to work not with one object, but with a whole group? For example, we want to create a list of birthdays for all employees in our compa
08.08.2023
1164views
0comments
0
Зепп Бранниган Random EN
8 August 2023 10:14
More about the garbage collector in Java Hello! In the last lecture, we first got acquainted with the built-in mechanism of the Java language - the garbage collector. It functions in the background while your program is running, collects objects that have become unnecessary, which
08.08.2023
1212views
0comments
0
Зепп Бранниган Random EN
8 August 2023 10:14
Object lifecycle Hello! I think you won’t be too surprised if you are told that the amount of memory on your computer is limited :) Even a hard drive, which is many times larger than RAM, can be packed to capacity with your favorite games, TV shows and more
08.08.2023
2189views
0comments
0
Зепп Бранниган Random EN
8 August 2023 10:14
Ternary operator in Java Hello! Today's lecture will not be very long, but definitely useful :) We will talk about the so-called . "Ternary" in translation means "triple". This is an alternative to the conditional operator you are already familiar with. Let's take
08.08.2023
2143views
0comments
0
Зепп Бранниган Random EN
8 August 2023 10:14
Getters and Setters Hello! In past lectures, you have already learned how to create your own full-fledged classes, with fields and methods. This is serious progress, well done! But now I have to tell you an unpleasant truth. We created our classes not quite ri
08.08.2023
6375views
0comments
0
Зепп Бранниган Random EN
8 August 2023 10:14
Base class constructors Hello! Last time we talked about , and learned a lot about them. Now we'll talk about such a thing as base class constructors. What is ? The fact is that in Java several different classes can have a common origin. This is called . Several d
08.08.2023
1455views
0comments
0

1
...
70
71
72
73
74
...
175