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1. JPA Mini Book

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How to increase donations to an open source project

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Lots of open source projects raise money from their user communities by soliciting donations.  Most open source projects will have the ‘Support’  or ‘Make a Donation’ button on their home page or download page. At Eclipse we have had the Friend of Eclipse program for a number of years to solicit financial support for our community. Earlier this year, we ...

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Simple Gradle Web Application

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Gradle easily supports Java web applications through the “war” and “jetty” plugins. This tutorial will show you how to quickly make a simple Java Servlet web application.                     Our basic project structure will be: basic-web src main java com codetutr HelloWorldServlet.java webapp WEB-INF web.xml First, create a folder called basic-web, and ...

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Does Defensive Programming Deserve Such a Bad Name?

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The other day I went to an hour’s talk on erlang, merely as an observer; I know nothing about erlang except that it does sound interesting and that the syntax is… well… unusual. The talk was given to some Java programmers who had recently learnt erlang and was a fair critic about their first erlang project, which they were just ...

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Bending NetBeans Code Templates to My Will

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Anyone who has read any of my posts on NetBeans knows that there are numerous features of NetBeans that I really like. Recently, however, I found myself becoming increasingly irritated with a particular issue with a particular feature of NetBeans. It finally bothered me enough to motivate me to look into how to disable or alter that feature to my ...

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JMS and Spring: Small Things Sometimes Matter

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JmsTemplate and DefaultMessageListenerContainer are Spring helpers for accessing JMS compatible MOM. Their main goal is to form a layer above the JMS API and deal with infrastructure such as transaction management/message acknowledgement and hiding some of the repetitive and clumsy parts of the JMS API (hang in there: JMS 2.0 is on its way!). To use either one of these ...

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JPA: Determining the Owning Side of a Relationship

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When using the Java Persistence API (JPA) it is often necessary to create relationships between two entities.  These relationships are defined within the data model (think database) through the use of foreign keys and within our object model (think Java) using annotations to indicate associations. When defining relationships or associations within the object model a common task is identifying the ...

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How to Install Gradle

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Gradle is a dependency management / build tool that combines the best of Maven and Ant, making it an extremely powerful and customizable tool. It also uses a sleek Groovy DSL instead of the XML approach of Maven and Ant and is my personal tool-of-choice when I start a new project. Here’s how to install. I’ll write a future post ...

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Grails Design Best Practices

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Grails is designed to be an interactive agile based rapid development framework which advocates convention not configuration. This article explained the usage and best practices around the Grails.                 Domain-driven design Always use domain-driven design: First create your basic domain model classes, and then use scaffolding to get them online. This will help ...

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Penetration Testing Shouldn’t be a Waste of Time

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In a recent post on “Debunking Myths: Penetration Testing is a Waste of Time”, Rohit Sethi looks at some of the disadvantages of the passive and irresponsible way that application pen testing is generally done today: wait until the system is ready to go live, hire an outside firm or consultant, give them a short time to try to hack ...

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