install java

1	An incredible language that receives far more hate than it deserves
2because of it's poor beginnings.
3	Everyone remembers the slow java applets but often fail to understand
4Java's many positives including:
5 - compatability with many different systems
6 - Just-In-Time compilation making it almost as fast as a native language
7 - the wide range of high-quality and open source libraries developed over
8   many years
9
10	Sure, it may not look as sexy as Python or NodeJS, but when you're
11debugging the call stack 50 functions deep, you'll be glad you picked Java

1#Install java in Linux
2sudo apt install openjdk-11-jre-headless -y  # version 11.0.10+9-0ubuntu1~20.04, or
3sudo apt install default-jre -y              # version 2:1.11-72
4sudo apt install openjdk-8-jre-headless -y   # version 8u282-b08-0ubuntu1~20.04
5sudo apt install openjdk-13-jre-headless -y  # version 13.0.4+8-1~20.04
6sudo apt install openjdk-14-jre-headless -y  # version 14.0.2+12-1~20.04

1public class Example {
2  public static void main(String[] args) {
3  	System.out.println("Hello, world!"); 
4  }
5}

1Java is a computer language developed by Sun Microsystems. It was released in 1995 as a core part of Sun's Java platform. Although its syntax is very similar to the C, C Plus plus, it is based on a simpler object model

1Java is a set of computer software and specifications developed by James
2Gosling at Sun Microsystems, which was later acquired by the Oracle
3Corporation, that provides a system for developing application software and
4deploying it in a cross-platform computing environment.