The structure of Java is given below Documentation section Package statement Import statement Interface statement Main method c...

Jenkins: Used for continuous integrating, testing and deployment of code it automates all the process. Ansible: Used for Deploy n number o...

  Certificate verification failed: The certificate is NOT trusted. The certificate chain uses expired certificate.  Could not handshake: Err...

The features of Java is given below 1. Object oriented:  Java is object oriented programming language. 2. Simple : Shimla with C an...

  Src  https://docs.docker.com/engine/swarm/how-swarm-mode-works/nodes/ Docker Swarm : Docker swarm is a container orchestration clusterin...

History:  James Gosling and his team started a project called Green Project in Sun micro system in the year 1990 the main aim of this proje...

Remove the Oracle's Java folder:  $ sudo rm -r /usr/lib/jvm/java-11-oracle Install OpenJDK 8 from APT: $ sudo apt install openjdk-8-jdk ...