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Apache ActiveMQ Distributed Queue Tutorial

Apache ActiveMQ (AMQ) is an open source messaging server written in Java, which implements JMS 1.1 specifications. In this article, I will demonstrate how to utilize a distributed queue within a group of AMQ brokers. Table Of Contents 1. Introduction 2. Apache ActiveMQ Server Installation 3. Producer Java Application 3.1. MessageProducerApp 3.2. QueueMessageProducer 3.3. Export MessageProducerApp as a Jar 4. ...

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Java Servlet Container Example

In this article we will demonstrate deploying and running a simple web application via a servlet container. In addition to demonstrating how to run the sample web application using a servlet container will also show how to run the sample web application using maven from the command line. For this article we will make use of Tomcat 8.5.x both for ...

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Log4j Rotation Example

This article is a tutorial about log rotation in Log4j. In this tutorial, we are going to configure log4j via property files. 1. Introduction Log4J(Java) is widely used logging framework for Java. It continues to grow continuously with recent upgrade of Log4j2. We want to rotate log files to avoid log file accumulation and easily segregate logs under the log ...

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Java 8 Predicate Example

Hello readers, this tutorial explains the functional interface Predicate which has been newly introduced in the java.util.function package. This package describes the Predicate’s usage with the help of multiple examples. 1. Introduction java.util.function.Predicate is the new functional interface defined in the java.util.function package. The Predicate is used in all the contexts where an object needs to be evaluated for a given ...

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Java Swing GridLayout Example

In Swing, in order to arrange components in a form, dialog box etc. in user friendly manner layout manager is found to be very useful. There are several layout managers. GridLayout is such layout manager. 1. Introduction GridLayout actually forms a grid like arrangement of cells. This is just like one excel spreadsheet where each cell is of same size. If ...

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Spring SOAP with XML Example

Web services are the distributed computing mechanism designed to work with open standards and protocols, thus facilitating interoperability among disparate systems. Simple Object Access Protocol (SOAP) was developed by Microsoft as an improvement over the existing technologies like Distributed Component Object Model (DCOM), Common Object Request Broker Architecture (CORBA) and Java Remote Method Invocation (RMI) that relied on binary and ...

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Java UUID Generator Example

Hello readers, in this tutorial, we are generating the UUID using the Java and Java UUID Generator API. 1. Introduction UUID / GUID (Universally / Globally Unique Identifier) is frequently used in programming. Some of its usages are for creating random file names, session id in the web application, transaction id and for record’s primary keys in the database (i.e. ...

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Java Convert Csv to Excel File Example

Hello readers, in this tutorial, we are going to implement the Csv to Excel file conversion by using the Apache POI library. This tutorial will show developers how to write large data to an excel file using SXSSF. 1. Introduction SXSSF (Package Name: org.apache.poi.xssf.streaming) is an API compatible streaming extension of XSSF to be used when very large spreadsheets have ...

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Java Servlet File Download and File Upload Example

Hello readers, in this tutorial, we will show you how to set up the File Upload and Download functionality in a Servlet based Java web application. Table Of Contents 1. Introduction 1.1 What is Servlet? 1.2 Servlet File Upload 1.3 Servlet File Download 2. Java Servlet File Download and File Upload Example 2.1 Tools Used 2.2 Project Structure 2.3 Project ...

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Spring Web Application Example

In this article we will see how to develop a simple web application using Spring framework. This is a very simple example of developing a spring web application; it does not go into the details of performance, security, scaling etc. 1. Introduction Spring Framework is a Java platform that provides comprehensive infrastructure support for developing Java applications. Spring handles the ...

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