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Alex Vypirailenko
Java Numbers
5 February 2025 12:18
Java isDigit method
Methods that return a boolean value most often begin with the word “is” and mean checking if the element being checked matches a certain condition. The Character.isDigit() method, that we are going to discuss in this article...
Oleksandr Miadelets
Statements in Java
5 February 2025 9:33
Java Assertions
Assert statement In Java is used to test certain assumptions about the state of a program during execution. This helps to easily detect errors and debug the program. An assertion statement in Java is written using the Java assert keyword followed by a boolean expression...
CodeGym
Random
1 February 2025 15:39
Development Trends 2025: AI, Project Loom, and No-Code Platforms
The world of development is like an endless puzzle, where each new piece changes the overall picture. In 2025, technologies continue to evolve at such...
Jakub Raczkowski
Success Stories
26 January 2025 5:29
From English teacher to Junior Java Engineer
This is my story how I converted from teaching English to programming. It wasn't quick, it wasn't easy, but it was one of the best decisions in my life.
Artem Divertitto
Keywords in Java
15 January 2025 13:01
Access Modifiers in Java
Hi! In today's lesson, we'll get acquainted with the concept of access modifiers and consider examples of how to work with them. Of course, saying 'get acquainted' isn't quite right: you are already familiar with most of them from previous lessons. Just in case, let's refresh our memory of the most important...
Pavlo Plynko
Java Collections
14 January 2025 12:24
Java Hashtable
Java Hashtable class is one of the oldest members of Java Collection Framework. It is an implementation of mathematical hash table data structure. In Java hashtable internally contains buckets where the key/value pairs are stored. Hashtable is pretty similar to HashMap. The most significant difference between...
Oleksandr Miadelets
Java Algorithms
14 January 2025 10:46
Insertion Sort in Java
Sorting arrays is one of the most common operations a Java beginner should know how to do. Although arrays aren't always the most convenient way to arrange data and this applies mostly to small numbers, the concept behind array sorting has tons of applications...
Artem Divertitto
Design Patterns in Java
13 January 2025 12:47
Java Singleton Class
Hi! Today we'll dive into the details of various design patterns, starting with the singleton pattern. Let's review: what do we know about design patterns in general? Design patterns are best practices that we can apply to solve a number of known problems...
Jesse Haniel
Java Collections
13 January 2025 11:36
Java Priority Queue: not a classical queue
In this article we learn a priority queue, Java class, that implements Queue interface. What does a programmer know of regular Queue Interface? First of all, this interface is based on the FIFO principle or “first in first out”. That reminds a regular queue in its common meaning. You want to get coffee from McDrive?
John Selawsky
Statements in Java
12 January 2025 14:09
IF ELSE Java Statements
An if else statement in Java is a conditional statement. Java uses conditions just like mathematics, allowing comparisons that yield Boolean results. So you can test inputs to see how they compare to a static set of values that you specify. Because the result is Boolean, there are only two possible results...
Oleksandr Miadelets
Java Collections
12 January 2025 14:06
Java Queue Interface and implementations
Here we are going to discuss the Java Queue interface. You’ll find out what Queue data structure is, how it is represented in Java, what methods are the most important for all queues. Also, what implementations of Queue are in Java language. After that, we take a closer look at the most important...
Artem Divertitto
Java Collections
11 January 2025 9:22
ArrayList to Array Conversion in Java
Arrays 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...
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