Learn Java

This repo contains small example programs of Java. I have created this for my learning purposes.

Prerequisites

I have personally used this on Mac OS 10.15 (Catalina) with zsh on Visual Studio Code

• Java 8+
• Makefile
• envsubst

Makefile

The Makefile is created to simplify the repeated actions.

The reason for using Makefile instead of using tasks.json is, I didn't feel it to be very intutive. Lot of keystrokes were required. And chaining bash commands are hard to put in. Makefile is a simple way to go and is natively supported in Linux and Mac. With Makefile I can be comfortable chaining commands and using it on terminal per se.

This serves the following purposes:

• Create a Java boilerplate code to start writing the programs
• Compile the Java files, run it and clean the *.class files
• Running any Java program from the cwd without any extra steps

Variables

• JF - The main folder name. Specification of folder name for creating boilerplate code and running

Other variables are automatically generated

Commands

All the programs can be run from the root of the directory

• default - Compiles, runs and cleans the Java program

  • Example
    make JF=HelloWorld

• create - Creates simple boilerplate code with HelloWorld program

  • Example
    make JF=HelloWorld create