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Dica Java: Functional Interface #

É bem comum no desenvolvimento de aplicações Java termos injeções de dependências de uma mesma bean em diferentes locais e em muitas vezes em relações entre beans como nos exemplos abaixo: @Service @RequiredArgsConstructor public class PersonUpdate

java教程 282 2024-09-24 06:25:36
What is an Atomic in Java? Understanding Atomicity and Thread Safety in Java

1. Introduction to Atomic in Java 1.1 What is an Atomic in Java? In Java, the java.util.concurrent.atomic package offers a set of classes that support lock-free thread-safe programming on single variables. These classes are collectiv

java教程 444 2024-09-24 06:22:13
Longest substring without repeating characters

Problem Brute force approach will involve creating all the possible substrings of the given string and finding out which one is the longest substring without the repeating character. This will lead to TC:O(n^2) Optimal approach: TC : O(n) SC : O(2

java教程 686 2024-09-24 06:21:48
Practical aspects of Microservices Architecture

Microservices architecture is a design approach that structures an application as a collection of small, loosely coupled services. Each service is independently deployable and can communicate with others over a network. Here’s a breakdown of some pra

java教程 266 2024-09-24 06:17:44
AWS SnapStart - Part Measuring cold and warm starts with Java using different garbage collection algorithms

Introduction In the previous parts of our series, we measured the cold starts of the Lambda function with Java 21 runtime without SnapStart enabled, with SnapStart enabled and also applied DynamoDB invocation priming optimization with different

java教程 922 2024-09-24 06:16:44
Shifting Non-Zero Values Left: A Common Array Interview Problem-1

Introduction In technical interviews, array manipulation problems are frequently encountered. In this post, we’ll tackle a common problem: Shifting non-zero values to the left while maintaining the order of non-zero elements and pushing all zer

java教程 884 2024-09-23 22:15:39
Primeiro

Esse espaço será utilizado para registrar o entendimento dos conteúdos que estudo e sempre que possível revisitar esses pensamentos e mudar de opinião se necessário. Meu nome é Victor, 34 anos, estou concluindo o curso de Análise e Desenvolvimento de

java教程 650 2024-09-23 22:15:04
Are Java Code Signing Certificates Equivalent to SSL Certificates?

Most people are often confused between code signing and SSL/TLS certificates. They think both are the same, but they are distinct digital certificate types with different applications. While they both rely on public key cryptography to establish trus

java教程 593 2024-09-23 18:16:47
Using Java Native Access (JNA) to call MacOS API

Introduction Here is a simple example about how to use JNA with MacOS API. I am not going to explain this, because I am still learning, but I keep code minimal to make it easier to understand and get the basic idea about how to do it for other

java教程 629 2024-09-23 16:16:59
Understanding JVM Lock Optimizations

Concurrency is very critical to the development of robust, scalable applications that can perform several concurrent operations. However, a price needs to be paid for this in terms of synchronization. It incurs performance costs due to the attendant

java教程 439 2024-09-23 16:16:39
Best practices for using try-catch blocks to handle exceptions.

1. Catch Specific Exceptions Always catch the most specific exception first. This helps in identifying the exact issue and handling it appropriately. try { // Code that may throw an exception } catch (FileNotFoundException e) { // Handle Fi

java教程 1010 2024-09-23 16:15:03
asy Tricks to Concatenate Strings in Java

1. Using the + Operator The + operator is the simplest and most commonly used method to concatenate strings in Java. It’s intuitive and easy to understand, making it a popular choice among beginners. 1.1 Basic Example String firs

java教程 318 2024-09-23 06:22:38
Confusion Around Method Referencing

Method references in Java provide a way to refer to methodsor constructorswithout invoking them explicitly. They can be thought of as a shorthand for writing simple lambda expressions. Majorly method referencing can either be static or related to an

java教程 442 2024-09-23 06:21:14
Java Thread Pool: How to Efficiently Manage Threads

1. Introduction to Thread Pool in Java 1.1 What is a Thread Pool? A thread pool is a group of pre-instantiated reusable threads that are available to perform tasks. When a task is submitted, it is assigned to an idle thread in the po

java教程 825 2024-09-23 06:19:02
Understanding Array Basics in Java: A Simple Guide

Arrays are an essential part of Java programming, providing a way to store multiple values in a single variable. They come in handy when we need to group elements, iterate over them, or perform bulk operations. In this post, I'll walk you through so

java教程 293 2024-09-22 22:16:09