How-To write your first Java program (without any IDE) short tutorial for Windows

1. Install Notepad++ https://notepad-plus-plus.org/downloads/
2. Install JDK 11 from Oracle https://www.oracle.com/java/technologies/javase-jdk11-downloads.html
3. Configure Java 11 in the System Variable in Path (for check Java installation write in cmd: where java)

• variable: %JAVA_HOME% value: C:\Program Files\Java\jdk-11.0.11
• %JAVA_HOME%\bin in Path
• check to install in cmd with the command java — version and javac — version (you should restart cmd before check)

1. Install git (check to install in cmd with command git — version) https://git-scm.com/downloads
2. Registration on GitHub https://github.com/ and create a new empty repository (e.g. MyFirstProgram)
3. Configure your git account

$ git config --global user.name "{%YOUR_FULL_NAME%}"
$ git config --global user.email "{%YOUR_EMAIL_ADDRESS%}"

1. Install Gradle binary (copy it to the C:\) https://gradle.org/install/
2. Configure Gradle in the System Variable in Path. In Path C:\{%GRADLE_FOLDER_NAME%}\bin (e.g. C:\gradle-7.0\bin)

Write code in Notepad++ and save it with .java file type

public class MyFirstProgram {
	public static void main(String[] args) {
		System.out.println("Hello World");
	}
}

Create Project folder

• First: {%PROJECT_NAME%}sandbox\src\main\java move your code here
• Second: {%PROJECT_NAME%}sandbox\src\test\java

Initialization git in the {%PROJECT_NAME%} folder

• git init — initialization
• git checkout -b develop — create a new branch with name develop
• git add . — add changes to the branch develop
• git commit -m “Initial commit” — create commit
• git remote add origin https://github.com/{%GITHUB_USERNAME%}/{%REPOSITORY_NAME%}.git

1. Create SSH key: https://serhii-horoshko.medium.com/how-to-generate-your-ssh-key-798fdcf12722
2. Add SSH key to your GitHub account in the Settings -> SSH keys -> New SSH keys
3. Commit changes to the GitHub

git push origin develop

1. Add Gradle build.gradle file to the project and configure it (create it with command >> build.gradle) and add:

apply plugin: 'java'
apply plugin: 'application'
mainClassName = "MyFirstProgram"

Run gradle build, run gradle run command

1. Create .gitignore file in the project folder with >> .gitignore command and add to it build/ and .gradle text
2. Commit changes to GitHub (check the status with git status)

• git add .
• git commit -m “Added gradle to the project, added .gitignore file”
• git push origin develop
• git log — check commits with command
• check status with git status command

Reference

1. The Twelve Factors