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Exception Handling Guidelines & Best Practices

Let’s review some basic exception design guidelines, summarized from Object Design: Roles, Responsibilities, and Collaborations (Rebecca Wirfs-Brock and Alan McKean, Addison-Wesley, ...
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Spring Remoting Support with Http Invoker

Spring HTTP Invoker is an important solution for Java-to-Java Remoting. This technology uses the standard Java serialization mechanism to expose services through HTTP and can be thought ...
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The all-new Play Module Repository

Back in November, I spoke to Nicolas Leroux of the Play framework about creating a module repository. He agreed it would be a good idea, but lack of time has prevented me from starting ...
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Protect a REST service using HMAC (Play 2.0)

We have HTTPS, what more do we need? When you talk about security for REST based APIs, people often point to HTTPS. With HTTPS you can easily protect your services from prying eyes ...
java-interview-questions-answers

The Strategy Pattern

In a recent blog on I received a comment from Wojciech Soczy?ski about how the “strategy” pattern can be used to enforce the Single Responsibility Principle (SRP) when using Tell ...
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RabbitMQ: Scheduled Message Delivery

Earlier this month I gave a presentation at ComoRichWeb on RabbitMQ and one question from an attendee was “Is it possible to publish a message to be consumed at a later date?” I ...
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5 useful methods JSF developers should know

The aim of this post is a summary about some handy methods for JSF developers they can use in their day-to-day work. An utility class is a good place to put all methods together. I ...
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Configuring Quartz with JDBCJobStore in Spring

I am starting a little series about Quartz scheduler internals, tips and tricks, this is a chapter 0 – how to configure persistent job store. In Quartz you essentially have a ...
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Java 7’s Support for Suppressed Exceptions

A new constructor and two new methods were added to the Throwable class (parent of Exception and Error classes) in JDK 7. The new constructor and two new methods were added to support ...
java-interview-questions-answers

MANIFEST.MF and feature.xml versioning rules

I’m forever forgetting what the rules are for dependency declarations in MANIFEST.MF and feature.xml for osgi plugins and features. And Googling often results in frustration rather ...
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