- 22 August 2022 9:37Java Abstract Method and ClassesAbstract methods are a powerful tool of Java and give this object-oriented language even more capabilities when it comes to polymorphism. A Java abstract method can be used to create a basic framework for an entire program and enable you to adjust as needed. An abstract method is a method that has no...
- 22 August 2022 8:22Conversion of Array To ArrayList in JavaArrays are an extension of the Container class in Java and can be useful as a way to temporarily hold a set of primitive data types when the quantity of data is specifically known. But Arrays are static when created, which means that when you create one, you cannot change the number of items it holds...
- 18 August 2022 16:06Java Generics: how to use angled brackets in practiceGenerics are Java's special mechanism for implementing generic programming — a way to describe data and algorithms that lets you work with different datatypes without changing the description of the algorithms. The Oracle website has a separate tutorial dedicated to generics: "Lesson: Generics"...
- 18 August 2022 10:58UML Class DiagramI think everyone has heard the saying "Measure twice, cut once". It's true advice in programming. It's always better to think about the implementation before you spend any time carrying it out. During implementation, you often need to create classes and think up how they will interact...
- 18 August 2022 8:14Principles of OOPJava is an object-oriented language. This means that you need to write Java programs using an object-oriented paradigm. And this paradigm entails using objects and classes in your programs. Let's try using examples to understand what classes and objects are, and how to apply basic OOP principles...
- IT News Digest #28: Apple employees will return to the office under hybrid model; $1.9 billion stolen in crypto hacks so far this year; Chinese internet giants hand algorithm data to government Last week in the news: JetBrains IntelliJ IDEA 2022.2 uses Java 17 Runtime, Nearly half of all teens say they use the internet “almost constantly.”
- 17 August 2022 6:22OOP PrinciplesHi! Have you ever wondered why Java is designed exactly as it is? I mean, you declare classes and create objects based on classes, classes have methods, etc. But why is the language structured so that programs consist of classes and objects, and not something else? Why was the concept of an "object" invented...
- 15 August 2022 11:47
- 15 August 2022 9:23Java this KeywordOn CodeGym, students are introduced to the this keyword literally from the first lessons. Over time, its meaning becomes clear. But looking back, many people probably admit to themselves that for a long time they couldn't understand the Zen of this keyword. This article will pull back the curtain covering the secrets...
- 15 August 2022 8:15Java String.split() methodLet's talk about Java's String.split method: what it does and why it is needed. It's not hard to guess that it splits a Java string, but how does this work in practice? Let's dive deep into the operation of the method and discuss some non-obvious details. At the same time, we'll learn how many...