JAVA on Vanslog

Java 21 Pattern Matching Usecase With Scala

Thu, 21 Sep 2023 22:27:53 +0900

The highly developed Java is indistinguishable from Scala.

Build Integration Test Environment

Wed, 30 Aug 2023 14:03:48 +0900

Building an integrated test environment with Testcontainers and the JUnit 5 extension model

Support Configuration With Annotation

Fri, 11 Aug 2023 00:06:13 +0900

How to support annotation based configuration in spring library

Support Configuration With Namespace

Wed, 26 Jul 2023 14:16:08 +0900

How to support namespace-based configuration in a Spring library

Testcontainers Meilisearch

Fri, 21 Jul 2023 22:47:52 +0900

We introduce Testcontainers Meilisearch and share what we felt while developing it.

Introduction

Wed, 28 Jun 2023 13:48:31 +0900

Introducing the reasons and goals for starting the Spring Data Meilisearch project.

Why Use Deque Instead Of Stack

Fri, 05 May 2023 22:30:19 +0900

Use Deque instead of Stack?

When solving algorithm problems using Java, I used to use Deque instead of Stack. While searching online, I often came across posts that suggested using Deque instead of Stack class.

However, I think I was using it vaguely without thinking deeply about why I should use Deque. We took this opportunity to learn more about the differences between Stack and Deque.

A more complete and consistent set of LIFO stack operations is provided by the Deque interface and its implementations, which should be used in preference to this class. For example:

Why Spring

Thu, 21 Jul 2022 22:47:38 +0900

Spring is the Application Framework for enterprise environments and is the standard for Java-based web application development today. To fully understand Spring, you need to know its background of appearance.

This is because Spring is the result of solving the problems of J2EE(Java 2 Platform, Enterprise Edition) for enterprise application development. Understanding the background of spring’s features and advantages will enhance your understanding of spring.

J2EE

J2EE(Java 2 Platform, Enterprise Edition) is a set of specifications for enterprise application development. It was created by extending J2SE(Java 2 Platform, Standard Edition), a commonly used Java language.

Refactoring Loops To Collection Pipelines

Mon, 19 Jul 2021 13:03:57 +0000

When is it best to use streams introduced in Java 8?

Primitive Type And Reference Type

Fri, 16 Jul 2021 14:06:26 +0000

Let’s learn about Java’s basic data types and reference data types!

Sequence Diagram

Sat, 23 Jan 2021 16:10:03 +0900

Diagram representing the interaction of objects

Collaboration Diagram

Sat, 16 Jan 2021 18:48:45 +0900

A tool to express design patterns in UML2.0

What Is The Design Patterns

Sat, 16 Jan 2021 10:52:57 +0900

Design patterns for good object-oriented design

Solid Principle

Sun, 10 Jan 2021 19:53:10 +0900

Object-oriented design principles

Oop Features

Sat, 09 Jan 2021 17:18:32 +0900

Four characteristics of object-oriented programming (OOP)

Class Diagram

Fri, 08 Jan 2021 19:20:43 +0900

What is a class?

A class is a set of objects that have the same properties and behaviors. For example, what students majoring in software have in common is that they hear majoring in software as a fact and same majoring class as a fact. In this case, student majoring in software can be said to be a class of actual students.

Another way to define a class is to see it as a blueprint for creating an instance (object). The source code below defines a student class majoring in software. Let’s take a look at the code from the perspective of a blueprint for how classes create objects.