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Generate Pie Chart/Bar Graph in PDF using iText & JFreeChart

Generate Pie Chart/Bar Graph in PDF using iText & JFreeChart
iText is a wonderful library if you want to generate PDFs in Java. It comes with a huge set of API to create/manage a PDF file. We already saw in our previous tutorial how to generate a pdf file in itext and also how to merge ... Full story
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10 Most Useful Java Best Practice Quotes for Java Developers

10 Most Useful Java Best Practice Quotes for Java Developers
Quote 1: Avoid creating unnecessary objects and always prefer to do Lazy Initialization Object creation in Java is one of the most expensive operation in terms of memory utilization and performance impact. It is thus advisable to create or initialize an object only when it is required in the code. public class Countries { private List countries; public ... Full story
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R.I.P Sun: James Gosling paying Respects

The European Commission on Thursday approved Oracle Corp.'s acquisition of Sun Microsystems after regulators were assuaged over the fate of an open-source database, James Gosling have paid respect to Sun Microsystem on his blog. Please go to his blog and pay your respect to Sun. Full story
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Struts2 Validation Framework Tutorial with Example

Struts2 Validation Framework Tutorial with Example
Welcome to Part-3 of 7-part series of tutorials where we will go through different practical aspects of Struts2 Framework. In the last part we Created a Basic Struts2 Application from Scratch. I strongly recommend you to go through the previous articles in case you are new to Struts2. In this article we will learn how to ... Full story
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Tutorial: Create Struts 2 Application in Eclipse

Tutorial: Create Struts 2 Application in Eclipse
Welcome to the Part 2 of 7-part series where we will explore the world of Struts 2 Framework. In previous article we went through the basics of Struts2, its Architecture diagram, the request processing lifecycle and a brief comparison of Struts1 and Struts2. If you have not gone through the previous article, I ... Full story
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Introduction to Struts 2 Framework

Introduction to Struts 2 Framework
Lot of times I have been asked by users on this site to write tutorial about Struts 2 Framework. My previous tutorial on Creating Struts Application in Eclipse is one of the most viewed article on this site. So lets begin Part 1 of 7-parts series tutorials on Struts 2 Framework. In these tutorials we will discuss ... Full story
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Advanced Messaging Queuing Protocol: A Short Note

Advanced Messaging Queuing Protocol: A Short Note
Synopsis This note deals with AMQP, and some implementations, especially Qpid and ActiveMQ. Introduction AMQP stands for Advanced Messaging Queuing Protocol. It is a standard for cross platform messaging. It is a wire protocol and aims to enable functional compatibility between clients (from various platforms) and messaging brokers. It is pretty comprehensive and aims to cover all distributed business scenarios. ... Full story
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Simple Guide To Understand Resource Profile of Java Application

Simple Guide To Understand Resource Profile of Java Application
Synopsis This note describes a few simple commands on how to view the RAM and CPU usage of your Java process. It provides brief pointers on how to identify the influencing parameters and how to tweak it. Memory Java Heap The heap size of your Java process can be controlled by using a combination of –Xmx and –Xms. The heap size ... Full story
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Loading Java Properties Files

Loading Java Properties Files
Java Properties files are amazing resources to add information in Java. Generally these files are used to store static information in key and value pair. Things that you do not want to hard code in your Java code goes into properties files. Although there are multiple ways of loading properties file, I will be focusing on loading the resource bundle files from class path resources. ... Full story
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Inner classes in Java, the mystery within.

Inner classes in Java, the mystery within.
Inner classes, also called Nested Classes, are nothing but classes that are defined within other classes. The nesting is a relationship between classes, not objects. Inner classes have clearly two benefits, name control & access control. In Java, this benefit is not as important because Java packages give the name control. Java inner classes have feature that ... Full story
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