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Spring @Bean and PropertyPlaceHolderConfigurer

I was recently stumped by what I thought was going to be a fairly straightforward implementation – Consider the following Spring Java based bean definition file ( @Configuration):                 package ...
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Fake system clock pattern in Scala with implicit parameters

Fake system clock is a design pattern addressing testability issues of programs heavily relying on system time. If business logic flow depends on current system time, testing various ...
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MongoDB Pro Tip: Field Projections

Did you ever learn that select * from table in RDBMS-land is bad? Of course, you did! If you’re only looking for the email address of a user and not the other 15 columns worth of ...
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MongoDB Geo-Spatial Mobile Demo

Mongo: noun (pl mongo or mongos) – a monetary unit of Mongolia. Equal to one hundredth of a tugrik. Origin from Mongolian “silver” I’ve written about NoSQL DBMS [http://keyholesoftware.com/2012/10/01/is-nosql-the-sql-sequel/]. ...
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Java’s Reflection API

If you have ever asked yourself questions like these: – “How do I invoke a method, having only it’s name in a String?” – “How do I list all the attributes in a class ...
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Android Studio with android alternative emulator:Genymotion

Moving from Eclispe/ADT to Android Studio I was exploring some alternative configuration to improve my building environment. I came across a nice Android device emulator called Genymotion. ...
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Java 7 try-with-resources

Java 7 provides better resource management for resources that need to be closed when finished working with, for example files, streams, database connection and sockets. This language ...
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Why You Didn’t Get The Interview, Part II

In August 2012 I published a blog post Why You Didn’t Get The Interview, which received a good bit of attention from readers and was republished a few times (most notably by Lifehacker). ...
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Introduction by Example: JavaFX 8 Printing

I‘ve not blogged in awhile, and I miss sharing with others about all things JavaFX (My day job and family are likely excuses). For those who are new to this blog, I am the author ...
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Two Types of Deployment for Subsystems

During development you sometimes have a part of the system that is rarely changed, requires a lot of resources, has a lot of prerequisites to run, and/or takes a lot of time to deploy. ...
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