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Building Vaadin UI with Xtend

Today I have decided to say hello to Xtend . I had wish to learn some new programming language. The list of the criteria for choosing one, wasn’t so big .It must be a programming ...
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40 Java Collections Interview Questions and Answers

Java Collections Framework are the fundamental aspect of java programming language. It’s one of the important topic for java interview questions. Here I am listing some important ...
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Going REST: embedding Tomcat with Spring and JAX-RS (Apache CXF)

This post is logical continuation of the previous one. The only difference is the container we are going to use: instead of Jetty it will be our old buddy Apache Tomcat. Surprisingly, ...
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Hello Camel: Automatic File Transfer

Apache Camel is described on its main web page (and in the Camel User Guide) as ‘a versatile open-source integration framework based on known Enterprise Integration Patterns.’ ...
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What Is JNDI, SPI, CCI, LDAP And JCA?

JNDI stands for Java Naming and Directory Interface. It is an API to providing access to a directory service, that is, a service mapping name (strings) with objects, reference to remote ...
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Static factory methods vs traditional constructors

I’ve previously talked a little bit about the Builder Pattern, a useful pattern to instantiate classes with several (possibly optional) attributes that results in easier to read, ...
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The ins and outs of immutability

So in my first post I talked a little bit about the builder pattern and I mentioned a really powerful but yet overlooked concept: immutability. What is an immutable class? It’s simply ...
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The builder pattern in practice

I’m not going to dive into much details about the pattern because there’s already tons of posts and books that explain it in fine detail. Instead, I’m going to tell you why and ...
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Spring Data JPA and pagination

Let us start with the classic JPA way to support pagination. Consider a simple domain class – A ‘Member’ with attributes first name, last name. To support pagination ...
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Camel 2.11 – HTTP proxy routes with url rewriting functionality

In the upcoming Apache Camel 2.11 release I have recently added support for plugging in custom url rewrite implementations to HTTP based routes (http, http4, jetty). This allows people ...
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