JAVA FOR BEGINNERS - General Guidelines and Environment Settings

JAVA FOR BEGINNERS (Oracle)

Starting our Journey in the study group focused on learning and improving the fundamentals of Java.
In this first moment we will study the Book: Java for Beginners

SUMMARY

• AT THE END OF THIS CHAPTER 1 I WILL BE ABLE TO
• AT THE END OF THE BOOK I WILL BE ABLE TO
• STUDY GROUP
• OBJECTIVE
• EVOLUTION OF JAVA
• Obtaining the Java Development Kit (JDK)

## AT THE END OF THIS CHAP1 I WILL BE ABLE TO

• Essential Concepts and Practices from Chapter 1.
• Language conversions and good practices
• Blocks and Repetition Structure
• Identifiers
• Libraries

BY THE END OF THE BOOK I WILL BE ABLE TO

• Fundamentals and CORE of Java
• Preparation for the job market
• Acquire concepts of Object Oriented Programming (OOP)

STUDY GROUP

You can combine practical exercises, discussions and small projects to make learning more interactive and useful for all levels. In each chapter we will inform you which methods, libraries and/or commands are discontinued or have already been replaced.

OBJECTIVE

• For beginners: Building a solid foundation in programming and Java.
• For Intermediates and Advanced: Consolidation of knowledge and introduction to more complex concepts that prepare for the job market.

JAVA EVOLUTION

A summary of the main features from the beginning!

# Java 1.0 (1995) – O Começo ?
- Write Once, Run Anywhere (WORA)
- Suporte a:
  - Applets
  - Multithreading básico

# Java 1.2 (1998) – Java 2 e a Revolução ?
- Swing: Nova biblioteca para GUIs
- Collections Framework: Estruturas como ArrayList e HashMap
- JIT Compiler: Melhor desempenho

# Java 1.4 (2002) – Robustez e Desempenho ?
- Assertions para depuração
- Pacote java.nio: Melhorias no I/O
- Expressões Regulares (java.util.regex)

# Java 5 (2004) – Modernização da Linguagem ?
- Generics: List<String> 
- Enhanced for-loop: for (int i : array)
- Annotations: @Override
- Enums e Varargs
- Concurrent API: Melhor suporte a threads

# Java 6 (2006) – Refinamentos ?️
- Melhor desempenho da JVM
- Compiler API (javax.tools)
- Java Scripting API: Integração com JavaScript

# Java 7 (2011) – Simplificação e Eficiência ⚡
- Try-with-resources: Gerenciamento automático de recursos
- Switch com Strings
- Multi-catch em exceções
- NIO.2: Melhor manipulação de arquivos

# Java 8 (2014) – Programação Funcional ?
- Lambdas: (x) -> x * 2
- Streams API: Processamento declarativo de coleções
- Optional: Lidar com null de forma segura
- API de Data e Hora (java.time)
- Default Methods: Métodos padrão em interfaces

# Java 9 (2017) – Modularização ?
- JPMS: Java Platform Module System
- JShell: REPL para experimentaçã


# `Informações Importantes do Capítulo 1`
## 1. Introdução ao Java e sua Importância
História e Motivação do Java:
O capítulo aborda a criação do Java, suas origens em 1995, e os motivos pelos quais ele se tornou uma linguagem tão popular e confiável, especialmente em sistemas corporativos, dispositivos móveis e IoT.

Importante para discutir no clube: Por que escolher Java em 2024? Compare Java com outras linguagens, como Python ou JavaScript.
Características-chave:

Portabilidade (Write Once, Run Anywhere - WORA).
Forte tipagem e segurança.
Suporte a multithreading e programação orientada a objetos.

## Tech

## Installation

Source Contributions Bytecode POO Getting the Java Development Kit First Program Handling Syntax Errors Data Types
For production environments...

npm install --production
NODE_ENV=production node app

OBTAINING THE JAVA DEVELOPMENT KIT (JDK)

Ferramenta	Links de Download
Java Development Kit (JDK)	Java SE Downloads.
IntelliJ IDEA	IntelliJ IDEA Community Edition
Git Bash	Git Bash Download

INSTALLATION INSTRUCTIONS

Java Development Kit (JDK):

1. After accessing the official Oracle website at the link in the table above
2. Choose the latest version or version compatible with your operating system.
3. Download the installer and follow the instructions for installation.

IntelliJ IDEA

1. Access the official JetBrains website: IntelliJ IDEA Community.
2. Choose the operating system and download the installer.
3. Install IntelliJ IDEA and configure it to work with Java.

GitBash Installation: Git Bash Installation Step by Step - WIN / LINUX

Development

GOOD STUDIES! Start here: JAVA FOR BEGINNERS - CAP1: Introduction

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