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JavaOne 2012: Scala Tricks

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The first session I attended after lunch was Venkat Subramaniam‘s ‘Scala Tricks,’ held in the Hilton Golden Gate 3/4/5 conference room area. This is the first session in which I switched my planned session during JavaOne. I switched it last night as I look at my day’s schedule and realized that, although excited about Lambda, I felt like I had ...

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JavaOne 2012: What’s New in Scala 2.10

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After getting lunch, I went to Hilton Golden Gate 6/7/8 to see Martin Odersky‘s (Typesafe) presentation ‘What’s New in Scala 2.10.’ It is always an opportunity to hear a language’s creator discuss the language that he created. Odersky stated by providing a brief history of Scala: 1996-1997 Pizza 1998-2000 GJ, Java generics, javac 2003-2006 The Scala ‘Experiment’ 2006-2009 Industrial Strength ...

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Customize PMD in Eclipse with your own rules

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PMD is very nice Java code scanner which helps you avoid potential programming problems. It can be easily extended to your needs, and this post will bring you simple example of custom PMD rules related to JPA’s @Enumerated annotation usage. Before you’ll continue the reading, you should check one of my previous posts – JPA – @Enumerated default attribute. When ...

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Using Story Mapping For Defining Business Requiremets

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Story mapping is a lightweight and collaborative approach to defining and structuring user requirements. Story mapping involves describing the system as a list of features that provide a sequential story of requirements in a user-centric way. It supports iterative delivery where the story is divided into Features which can be prioritized and grouped by planned Releases/Minimum Marketable Features. Approach To ...

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JavaOne 2012: Mastering Java Deployment

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After grabbing an Italian Classic Combo for another JavaOne 2012 lunch, I headed to Hilton Imperial Ballroom B to see the presentation ‘Mastering Java Deployment.’ The speakers, both from Oracle, were Mark Howe and Igor Nekrestyano Howe stated that a goal of the deployment team is to help Java developers deploy their applications to platforms of choice. He started by ...

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Your first Juzu portlet on eXo platform

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Juzu is a Buddhist prayer bead. One sentence and I am sure you have already learnt something, impressive no? Ok, I won’t speak about Buddhism here. Juzu is also a new framework for developing portlets (and standalone applications soon) very quickly. You can find all the information you need on the Juzu website. Now let’s create our first portlet with ...

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Where do the stack traces come from?

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I believe that reading and understanding stack traces is an essential skill every programmer should posses in order to effectively troubleshoot problems with every JVM language (see also: Filtering irrelevant stack trace lines in logs and Logging exceptions root cause first). So may we start with a little quiz? Given the following piece of code, which methods will be present ...

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5 things I learned from a Hacker attack

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On Friday evening I got an e-mail from my provider. They told me my webspace was subject of a hackers attack and they would shut it down until they have analysed its root cause. There was no more information and the only thing I could do was to wait. Fortunately they wrote me back on Saturday morning with some explanation ...

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Spring Security: Prevent brute force attack

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Spring Security can do lot of stuff for you. Account blocking, password salt. But what about brute force blocker. That what you have to do by yourself. Fortunately Spring is quite flexible framework so it is not a big deal to configure it. Let me show you little guide how to do this for Grails application. First of all you ...

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Android Dialog – Android Custom Dialog

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In this tutorial I am going to describe how to create Android Custom Dialg. Android Dialog Create Android Project AndroidDialog ; File -> New -> Android Project Android Layout activity_android_dialog.xml <RelativeLayout xmlns:android='http://schemas.android.com/apk/res/android' xmlns:tools='http://schemas.android.com/tools' android:layout_width='match_parent' android:layout_height='match_parent' > <Button android:id='@+id/btn_launch' android:layout_width='wrap_content' android:layout_height='wrap_content' android:layout_alignParentTop='true' android:layout_centerHorizontal='true' android:layout_marginTop='115dp' android:text='Launch Dialog' /> <TextView android:id='@+id/textView1' android:layout_width='wrap_content' android:layout_height='wrap_content' android:layout_alignParentLeft='true' android:layout_alignParentTop='true' android:layout_marginLeft='28dp' android:layout_marginTop='54dp' android:text='@string/app_desc' android:textAppearance='?android:attr/textAppearanceLarge' /> </RelativeLayout> Dialog Layout ...

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