Starting With Java

Java is a type specific language which is a lot stricter than javascript.

Let’s follow the journey of java code.

First Java code is compiled into byte code by a compiler. Byte code is highly optimised so the code can be run quickly by JVM Java Virtual Machine. JVM combined with some System Library make a JRE Java Run Time Environment. The compiler and the JRE together make JDK Java Development Kit.

Set up JDK

brew tap adoptopenjdk/openjdk
brew install --cask adoptopenjdk8

Run these two commands on your shell to setup JDK on your machine.

Let’s start writting Java code now you can write whatever code you want to write.

Example

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

Make sure to follow convention and give your file the same name as your class.

Compile your file

javac FileName.java

After compiling your code you will see that you have a .class file with the same name as your file then you can run the code by running.

java ClassName

This should get set you up so you can start writing more complex things.

• tech