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How I am learning java

This article will share my experience on how to use my free time to learn the Java programming language. Here are some learning points: Table of contents language learning personal projects ecosystem language learning First, let me say that Java is not my first programming language, so my learning rate may be different from yours, depending on your experience. Currently, I am learning Java by participating in the Advent of Code challenge, which helps me become familiar with Java's general syntax, package import, file reading, exception handling, data types, etc. This method allows me to gain something almost every day in the learning process. Of course, I will also do some project practice to deepen my understanding. Let's take a look at this part. personal projects Just personally

Jan 22, 2025 pm 12:06 PM

You Aren't Gonna Need It Principle (YAGNI) Explained in Seconds

What is the You Aren't Gonna Need It (YAGNI) Principle? The YAGNI principle is a core tenet of efficient software development, prioritizing simplicity and minimizing unnecessary work. It boils down to this: "Only implement features when you ac

Jan 22, 2025 am 10:04 AM

How can one parse JSON text in a Java application?

JSON: A Versatile Data Format for Server-Client Communication Efficiently sending data from a server to a client for display on a webpage or other visual interface often involves using JSON (JavaScript Object Notation). Let's explore JSON's capabili

Jan 22, 2025 am 06:10 AM

Sociable Unit Test simplified

Struggling to create effective and resilient unit tests? Do your tests frequently fail after refactoring? Or is the process of writing sociable unit tests proving overly challenging and time-intensive? I might have a solution! Introducing UnitSoci

Jan 22, 2025 am 04:44 AM

Implementing Feature Flags with Spring: A Step-by-Step Guide for Feature Deployment

Feature flags, also known as feature toggles, are a powerful software development technique enabling dynamic feature activation or deactivation. This decoupling of feature deployment from code releases offers superior application control and mitigat

Jan 22, 2025 am 04:13 AM

Merge Sort Algorithm

Learn more about the merge sort algorithm The core idea of the merge sort algorithm is the divide and conquer method, that is, "divide and conquer". It recursively divides an array into smaller subarrays until each subarray contains only one element (which is now sorted). It then merges these subarrays into a larger sorted array. It is worth noting that the sorting process occurs during the merge phase, not the split phase. Algorithm demonstration Suppose we have an array to be sorted: We divide the array into two left and right subarrays: Continue recursive splitting until each subarray has only one element: Next, merge and sort these subarrays: smaller values on the left, larger values on the right. Final sorting: Code implementation (Java) The original J

Jan 21, 2025 pm 10:04 PM

Difference Java ByteArrayOutputStream.write(int n) with ByteArrayOutputStream.write(byte[] b, int off, int len)

This example demonstrates downloading an image from a URL using Java's InputStream and OutputStream. Two code snippets are presented, differing in their use of the OutputStream.write() method. Let's analyze the results. Method 1: write(byte[] b, int

Jan 21, 2025 pm 06:05 PM

Interface Segregation Principle (ISP) Explained in Seconds

? Interface Segregation Principle (ISP) Explained Simply The ISP, a core component of the SOLID design principles, states: Clients shouldn't be forced to depend on methods they don't use. Overly broad interfaces, packed with unrelated methods, lead

Jan 21, 2025 pm 12:07 PM

Object Orientation in C? Implementing an interface from scratch.

I have always been curious about computers and always thought: "Okay, I know how to use it, but how does it really work?" In the process, I often do a thought experiment: What if I implement it from scratch? It, what would I do? In this article, we will explore how interfaces work in object-oriented programming (using Java), and then implement a humble version of the interface in C. Let's look at an example Our example is simple: calculate the price of a vehicle. If it's a car, the price will be based on its top speed; if it's a motorcycle, the price will be based on its displacement. We first define the behavior of the vehicle using an interface: public class Main { public interface

Jan 21, 2025 am 10:05 AM

Implementation of jaxb-api has not been found on module path or classpath. Error Solution

Java applications may encounter the following errors when using Java Architecture for XML Binding (JAXB): javax.xml.bind.JAXBException: Implementation of JAXB-API has not been found on module path or classpath. - with linked exception: [java.lang.ClassNotFoundException: com.sun.xml.internal.

Jan 21, 2025 am 08:07 AM