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Hamcrest Matchers, Guava Predicate and Builder design pattern

Often, while coding we have to deal with some POJO objects that have dozens of fields in them. Many times we initialize those classes through a constructor having dozens of arguments ...
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Infamous Java bugs and pitfalls

In year 2000, I was in university and was on the verge of picking a language to build my career on. Java was not yet the mainstream but highly popular and on the spots. Applets were ...
spring-interview-questions-answers

Spring MVC Form Tutorial

This tutorial will show how to handle a form submission in Spring MVC. We will define a controller to handle the page load and the form submission. You can grab the code on GitHub. Prerequisites: You ...
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HotSpot GC Thread CPU footprint on Linux

The following question will test your knowledge on garbage collection and high CPU troubleshooting for Java applications running on Linux OS. This troubleshooting technique is especially ...
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SiftingAppender: logging different threads to different log files

One novel feature of Logback is SiftingAppender (JavaDoc). In short it’s a proxy appender that creates one child appender per each unique value of a given runtime property. Typically ...
spring-interview-questions-answers

Spring: To autowire or not to autowire

Since using Spring 2.5, I switched from the XML-based application context to the annotations. Although I find those very useful and huge time savers, I’ve always had the feeling that ...
spring-interview-questions-answers

Spring Social Twitter Setup

In the first part of this series, we looked at how we could consume the StackExchange REST API in order to retrieve its top questions. This second part will focus on setting up the ...
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Java 7 Update 21 Security Improvements in Detail

Oracle released three updates to Java yesterday. It is important to note that they contain several security related changes. The majority of those changes have been announced since ...
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Drools decision tables with Camel and Spring

As I’ve shown it in my previous post JBoss Drools are a very useful rules engine. The only problem is that creating the rules in the Rule language might be pretty complicated ...
java-interview-questions-answers

Let us write a document style Web Service

You might be aware that there are mainly four different styles of web services we can make use of. They are as follows:Document/Literal Document/Literal Wrapped RPC/Encoded RPC/LiteralOf ...
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