Java Roadmap

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Guia passo a passo para se tornar um Desenvolvedor Java em 2022.

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Step by step guide to becoming a Java Developer in 2022.

🔖 Java

In Java, when we compile a program, each individual class is converted into a .class file, which is known as byte code.

The JVM (Java virtual machine) is used to run the byte code.

📄 Hello Java!

In Java, every application must contain a main() method, which is the entry point for the application. All other methods are invoked from the main() method.

The signature of the method is public static void main(String[] args) { }. It accepts a single argument: an array of elements of type String.

System.out.println() can print to the console.

public class Clazz {
  public static void main(String[] args) {
    System.out.println("Hello, world!");
  }
}

☕ Road

1. Names and Things
   • Variables and Types
   • Expressions
   • Classes and Objects
2. Control
   • ...

📖 Bibliography

WEB

• https://roadmap.sh/java

COURSES

• Java COMPLETO Programação Orientada a Objetos +Projetos. Online at https://www.udemy.com/course/java-curso-completo/
• Learn Java. Online at https://www.codecademy.com/learn/learn-java

BOOKS

• Eck, David J. 2022. Introduction to Programming Using Java - Version 9, JavaFX Edition.