Page 72 | Java Blog - Java News and Learning posts on JavaRush

Viacheslav Random EN
8 August 2023 10:14
Probability theory in practice or do you know about Random There are many sciences in the world that study the theory of probability. And the sciences consist of various sections. For example, in mathematics there is a separate section devoted to the study of random events, quantities, etc. And sci
08.08.2023
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Зепп Бранниган Random EN
8 August 2023 10:14
Mechanism of overriding methods or Override in Java Hello! You already use methods in Java and know a lot about them. Surely you have come across a situation where in one class there were many methods with the same name, but different arguments. If you remember, in those cases we used the me
08.08.2023
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Зепп Бранниган Random EN
8 August 2023 10:14
The practice of using polymorphism Hello! Today we are finishing a series of lectures on principles . In this lesson, we will talk about polymorphism. Let's look at this statement in more detail. Let's start with the first part: "the ability to work with multiple types as if
08.08.2023
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Зепп Бранниган Random EN
8 August 2023 10:14
Abstract classes in Java with concrete examples Hello! In the previous lectures, we and figured out what they are for. Today's topic will overlap with the previous one. Let's talk about in Java. You probably remember what "abstraction" is - we already went through it :) If you suddenly f
08.08.2023
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Viacheslav Random EN
8 August 2023 10:14
UML: from theory to practice I think everyone heard in childhood such a saying as " ." It's the same in programming. It's always best to think about the implementation before you spend time executing it. Often you have to create classes during implementation, invent th
08.08.2023
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Marat Sadykov Random EN
8 August 2023 10:14
Part 3. We create the skeleton of our database, the first SQL commands using java.sql examples.Let's get back to the Java application. The variant from the previous part was created in style to control the correctness of the initial actions. We are implementing a three-tier (three-layer)
08.08.2023
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Marat Sadykov Random EN
8 August 2023 10:14
Part 2. DBMS structure, tables and data types We continue to create our simple exchange emulator. Here's what we'll do:
08.08.2023
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Зепп Бранниган Random EN
8 August 2023 10:14
Principles of encapsulation in Java Hello! Let's dedicate today's lecture to encapsulation and start it right away with examples :) In front of you is a familiar soda machine. I have one question for you: how does it work? Try to answer in detail: where the glass falls out fr
08.08.2023
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Эллеонора Керри Random EN
8 August 2023 10:14
Share knowledge, get a prize! [competition from JavaRush]We at JavaRush love to explain complex things with simple examples and share knowledge. And we are happy that we managed to gather a strong community of the same caring people. This year we have started a new tradition: to hold a competitio
08.08.2023
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Зепп Бранниган Random EN
8 August 2023 10:14
Relations between classes. Inheritance, composition and aggregation Hello! Today we will take a closer look at another principle of object-oriented programming (OOP) - inheritance. At the same time, we will study other types of relationships between classes - composition and aggregation. This topic will not
08.08.2023
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Зепп Бранниган Random EN
8 August 2023 10:14
OOP principles Hello! Have you ever wondered why Java is designed the way it is? In the sense that you create classes, objects are based on them, classes have methods, etc. But why is the structure of the language such that programs consist precisely of c
08.08.2023
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Зепп Бранниган Random EN
8 August 2023 10:14
8 common mistakes novice programmers make Hello! Today we will look at a list of 8 common mistakes of novice (and not only) Java developers. On the Web you will find many such collections: many of them are similar to each other. When we compiled this list, we focused on one criteri
08.08.2023
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