Home » Author Archives: Joel Patrick Llosa

Author Archives: Joel Patrick Llosa

Joel Patrick Llosa
I graduated from Silliman University in Dumaguete City with a degree in Bachelor of Science in Business Computer Application. I have contributed to many Java related projects at University of Southampton (iSolutions), Predictive Technologies, LLC., Confluence Service, North Concepts, Inc., NEC Telecom Software Philippines, Inc., and NEC Technologies Philippines, Inc. You can also find me in Upwork freelancing as a Java Developer.

Spring WebSockets Example

Hello there. Thank you for showing interest in Spring WebSockets Example. In this example we will learn how to send and receive messages between a browser and a server over a WebSocket. A WebSocket is used to build an interactive web application. WebSocket is a lightweight layer above TCP. We will be creating a football live commentary web application to ...

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Spring Boot Microservices Example

Welcome to the Spring Boot Microservices Example. Microservices is popular because it allows large systems to be composed of smaller systems. Think of it like the single responsiblity principle. The smaller systems have a single responsibilty to the large system. In the monolithic approach, all the smaller systems are bunched up to make up one large system or one large ...

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Java EE Bean Validation Example

1. Introduction Hi Java Code Geeks fan! This article is about a Java EE Bean Validation Example. One coding practice that we should do is to always validate variables before using. In this example we validate the input received from the user to maintain data integrity. Maintaining data integrity is an important part of application logic. Validating data can take ...

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Java EE Filter Design Pattern Example

1. Introduction Hi Java Code Geeks fan! This article is about a Java EE Filter Design Pattern Example. The filter pattern is used exetnsively in Java EE. It is most commonly used in combination with servlets. Servlets operate in the web layer and handle HTTP requests and responses. The role of filters is to perform some useful action against requests ...

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Java EE Observer Design Pattern Example

1. Introduction Hi Java Code Geeks fan! This article is about a Java EE Observer Design Pattern Example. The observer pattern is one of the most widely used design pattern in programming. It is implemented in the java.util package of Java SE 8 as Observer and Observable. By extending these classes, we can easily implement the observer pattern. But this ...

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Eclipse with Wildfly and JBoss Tools Example

1. Introduction In this example, we will build a simple Java EE web project, also known as a “hello world” Java EE web application. We will be using Eclipse with Wildfly and JBoss Tools. First and foremost, let’s install the following: Eclipse WildFly JBoss Tools For WildFly, we’ll use the Java EE Full and Web Distributioin. Follow the respective instructions ...

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Spring vs Spring Boot Example

1. Spring vs Spring Boot Welcome to the Spring vs Spring Boot example. First and foremost, this is not Spring MVC vs Spring Boot. So you won’t find any discussion relating to web. The example that will be shown here is the simplest thing that could possibly work to show the difference between Spring and Spring Boot. When we speak ...

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Git Tutorial for Beginners

1. Git What? Welcome to the Git Tutorial for Beginners. What is Git? Git is a free and open source distributed version control system. It was originally developed by Linus Torvalds, the creator of the Linux operating system. Git is fast and can handle projects of different sizes. If you have a software project, chances are you will rely on ...

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Spring Data GemFire Tutorial

Welcome to the Spring Data GemFire tutorial. GemFire is a product from Pivotal. Pivotal Gemfire is an in-memory data grid powered by Apache Geode. Here is a quote from the Pivotal GemFire documentation: Pivotal GemFire is a data management platform that provides real-time, consistent access to data-intensive applications throughout widely distributed cloud architectures. GemFire pools memory, CPU, network resources, and ...

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Hibernate in Eclipse with PostgreSQL Example

This article will show you a simple example of how to use Hibernate in Eclipse with PostgreSQL. PostgreSQL is an object-relational database management system. It’s one of the most popular databases used in the world. Hibernate is a framework for mapping object-oriented domain model to a relational database. Hibernate handles persistent database accesses with high-level object handling functions. 1. Assumptions ...

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