Here is a simple Java program that takes user inputs for the message (encrypted or human readable) then either encrypt or decrypt the message based on provided key. This program is not intended to run as a real world modern encryption and encryption program, by to learn how to use while and for loops.
Category Archives: Computer Science
Computer Science (CS) and Information Technology (IT) related items will be posted under this category. Topics include, but not limited to, system administration, hardware/software troubleshooting, coding/programming (PHP, HTML, Java, Python, etc) and more.
Introduction to pfSense
This will be an introduction or getting started guide to pfSense. The pfSense is an open-source firewall and router software application written based on Linux FreeBSD. It can be installed on a physical or a virtual machine (VM) environment. It has all the powerful features of Cisco, IBM of other proprietary firewall appliance developers. Additional features can be added by installing third-party packages (add-ons, plugins) to the pfSense. It is one of the most compressive industrial and enterprise grades open-source firewalls. You may install this application in your home environment for advanced firewall and routing configurations.
This guide will not try to repeat what has been already published by Netgate Docs. This guide will add additional information and value to official documentation. Please follow the external links for additional information.
VMware Workstation Custom Advanced Setup
This tutorial will guide you though on how to setup a virtual machine (VM) on Type 2 hypervisor, VMware Workstation Pro 16. A custom setup allows you to configure hardware and software components of your VM before installing the OS using an ISO image. You can modify these settings even after you complete the configuration and installation process from the settings menu of your VMware Workstation Pro. For Typical Recommended setup, please read the VMware Workstation Setup.
Check vowel or consonant in Java
Question: Write a program that prompts the user to enter a letter and check whether the letter is a vowel or consonant. Must display any input with non-letter characters. This is based on a question from Java textbook by Dr. Daniel Liang.
Tic Tac Toe game in Java
This is an example of using nested while loops, char arrays and if statements. Please note this is based on tutorial by Alex Lee. However, a modification was made to the code to remove a bug. The original code by the author would allow the player to place the position on top of the CPU position. Please subscribe to Alex’s YouTube channel and support him.