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Natural Ids in Hibernate

A natural id is a property or a set of properties that would identify an entity uniquely. We can have at-most one natural id defined for an entity. When Hibernate sees natural-id tag ...
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Top 5 Useful Hidden Eclipse Features

Eclipse is a beast. A device whose mystery is only exceeded by its power. Some would call it a continuum transfunctioner. Others would call it a transmogrifier. Yes, it is so huge, ...
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Neo4j: Making implicit relationships explicit & bidirectional relationships

I recently read Michal Bachman’s post about bidirectional relationships in Neo4j in which he suggests that for some relationship types we’re not that interested in the relationship’s ...
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So, You Want To Quit Your Job? (Fantasy Versus Reality)

This is part two in a series about quitting your job.  Check out the first post here. Imagine you are going for a run in your neighborhood; just a casual jog. You are running along ...
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Most efficient way to increment a Map value in Java – Only search the key once

This question may be considered too basic, but is frequently asked in the forums. In this post, I will discuss one way that only searches the key in Map ONCE. Let’s first look at ...
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Simple CRUD using Servlet 3.0, Redis/Jedis and CDI – Part 1

In this post we will build a simple user crud. The data will be stored in Redis. To interact with Redis we will use Jedis library. CDI for Depedency Injection and Servlet 3.0 for the ...
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Adding Social Sign In to a Spring MVC Web Application: Registration and Login

The first part of this tutorial described how we can configure Spring Social 1.1.0 and Spring Security 3.2.0 but it left two very important questions unanswered. These questions are:How ...
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How to read CSV files in Java – A case study of Iterator and Decorator

In this post, I will talk about how to read CSV (Comma-separated values) files using Apache Common CSV. From this case study, we will learn how to use Iterator and Decorator in context ...
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Grails: Applying build information to your builds

Occasionally, when I buy some food I check the label to see how unhealthy it is in an effort to remind myself to eat better. I probably should do this more often but that’s another ...
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Introduction to Java lambdas

The main theme of Java 8 is lambdas. I have noticed that for many Java programmers lambdas are pretty tough material. So let’s try to get a basic understanding of them. First ...
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