Tag: Java

What is Yarn?

Yarn is an alternative npm-client used for working with JavaScript as a package manager that was developed by the Facebook team. It also allows us to share code with other developers around the world and use solutions from other developers. The code itself is distributed via packages, sometimes referred to as modules. The package contains a .package.json file which describes the contents, as well as all the associated distributed code. In comparison with npm, Yarn is considered to be a better alternative and surpasses NPM in the following parameters:

What is Yarn?

Yarn is a package management tool expressly designed to speed up the installation of packages from the npm registry by running operations in parallel to increase speed, improve reliability, and boost security. Yarn allows us better to automate the installation processes of npm software packages and is also advantageous when upgrading, making configuration changes, or removing npm packages. 

What is Jitsi?

Jitsi is a set of open-source projects that allow you to create a secure video conferencing system for your team. It has features such as superior sound quality, excellent encryption and privacy, multi-platform and much more. The Jitsi client can work both in the application and in the web browser. You can broadcast your desktop as well as individual windows, and invite users using URL-link. We will be installing Jitsi on Ubuntu 18.04 server. We will install additional components such as Java's OpenJdk, Nginx to correctly install, configure and use it. Let's talk a bit about the components.

What is Wildfly?

WildFly is a Java runtime application server and software management platform implemented in Java. It is primarily used to provision Java applications and services on a Java-based platform. It is currently developed by Red Hat as open-source software (apart from the community forums) and was better-known as JBoss AS previously. While the WildFly software remains open-source, paid support can be purchased from RedHat if needed. RedHat continues to implement a separate version of this software under the JBoss EAP name.

What is Java?

Java is considered one of the most popular programming languages. Java is a typed object-oriented programming language developed by Sun Microsystems (and subsequently acquired by Oracle). Development is mainly performed by a community organized through the Java Community Process. The language and the main technologies that implements it are distributed under the GPL but the trademark rights are owned by Oracle Corporation. Code written in Java (using the JVM - Java Virtual Machine) is transformed into bytecode and due to this, programs can run on any system where the JVM is installed. Therefore, Java is often called a cross-platform language. Most often, Java is used to develop backend programs and android applications.

Introduction

In this tutorial, our objective is to install WildFly on an unmanaged CentOS 7 server. WildFly is a managed application runtime server and Java software platform used to provision Java applications and services. It is an open-source software which is consistently being improved by its user community. While the WildFly software remains open-source, if paid support is needed, it is provided by Red Hat who currently develops the software (apart from the community forums). Some may be more familiar with WildFly's previous name, which was JBoss AS. RedHat continues to develop its version of this software under the JBoss EAP name.

What is Graylog Sidecar?

Graylog Sidecar is a nimble configuration management framework for various log collectors called backends. The Graylog master node acts as a centrally located hub that contains the configurations of the log collectors. Sidecar can run as a service on both Windows and Linux servers.

What is Tomcat?

In this article, we will be demonstrating how to install Apache Tomcat on CentOS 8. Before we begin, let's define exactly what Apache Tomcat is. Apache defines Tomcat as: "An open-source, servlet container, JavaServer Pages, Java Expression Language, and WebSocket technology that also acts as a web server. It affords a "pure Java" based HTTP server environment in which Java can be executed." Tomcat works with the Java programming language and is associated with web applications written in Java.

Today, we have multiple tools at our disposal when it comes to web application testing. Sometimes, it can be challenging to make the right decision when it comes to choosing a web application testing tool that fits your specific needs. There are endless factors that come into play when inspecting, verifying, and assessing code as multiple factors come into play that depends on the type of platform being used (e.g. a server cluster or virtual cloud-based system), the programming language being employed as well as the purpose of the web application itself.

In our previous article on Selenium, we touched on the tools that the software provides for testing web applications. In this article, we will review the installation of these tools and some basic tests that can be run using the following tools.