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...
Java Tutorials, Tips & Tricks
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...
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....
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...
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...
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...
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 &...
Null-safe Type in Java 7: New way to handle NullPointerException
Update: This feature has been removed from the final feature list that is being included in Java 7. Thanks @Stephen and @Stefan for the comments. Please refer to Project Coin for more details. NullPoniterException...
Setting Tomcat Heap Size (JVM Heap) in Eclipse
Recently while running Tomcat under Eclipse for one of the web application I was getting Java Heap memory related error java.lang.OutOfMemoryError. What needs to be done here basically is to increase the jvm heap...
Java Garbage Collection Simplified
Garbage collection is a way in which Java recollects the space occupied by loitering objects. By doing so, it [Java] ensures that your application never runs out of memory (though we cannot be assured that the program will ever run out of memory).