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Parsing a file with Stream API in Java 8

Streams are everywhere in Java 8. Just look around and for sure you will find them. It also applies to java.io.BufferedReader. Parsing a file in Java 8 with Stream API is extremely ...
java-interview-questions-answers

Writing Clean Tests – New Considered Harmful

It is pretty hard to figure out a good definition for clean code because everyone of us has our own definition for the word clean. However, there is one definition which seems to be ...
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JPA 2.1 Entity Graph – Part 1: Named entity graphs

Lazy loading was often an issue with JPA 2.0. You have to define at the entity if you want to use FetchType.LAZY (default) or FetchType.EAGER to load the relation and this mode is always ...
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Prefix and Suffix Matches in Solr

Search engines are all about looking up strings. The user enters a query term that is then retrieved from the inverted index. Sometimes a user is looking for a value that is only a ...
java-interview-questions-answers

Generate your JAXB classes in a second with xjc

Since JAXB is part of the JDK, it is one of the most often used frameworks to process XML documents. It provides a comfortable way to retrieve and store data from XML documents to Java ...
java-interview-questions-answers

SSL encrypted EJB calls with JBoss AS 7

Encrypting the communication between client and server provides improved security and privacy protection for your system. This can be an important requirement by the customer, especially ...
spring-interview-questions-answers

Spring Rest Controller with angularjs resource

Angularjs ngResource is an angularjs module for interacting with REST based services. I used it recently for a small project with Spring MVC and wanted to document a configuration ...
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Spice up your test code with custom assertions

Inspired by the @tkaczanowski talk during GeeCON conference I decided to have a closer look at custom assertions with AssertJ library. In my ‘Dice’ game I created a ‘Chance’ ...
java-interview-questions-answers

JPA 2.1 Type Converter – The better way to persist enums

Persisting enums with JPA 2.0 is possible, but there is no nice way to do it. Using the @Enumerated annotation, you can use EnumType.ORDINAL or EnumType.STRING to map the enum value ...
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Java 8 Friday: Better Exceptions

At Data Geekery, we love Java. And as we’re really into jOOQ’s fluent API and query DSL, we’re absolutely thrilled about what Java 8 will bring to our ecosystem. Java 8 Friday Every ...
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