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Android promoted Actions: Floating action button (FAB)

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Recently new design pattern were introduced in Android. One of the most known pattern is the Promoted Actions. They are actions that  are directly visible in the UI instead of using action bar button; for this reason these actions are called promoted, they can be easily accessed and define the main action in the current UI. For example, if we ...

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One Jar To Rule Them All: Apache TomEE + Shrinkwrap == JavaEE Boot

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WARNING: I am not an expert of Spring Boot. There are a lot of things that I find really interesting about it and of course that can really improve your day-to-day work. Moreover I don’t have anything against Spring Boot nor people who develop it or use it. But I think that community are overestimating/overvenerating this product. A year ago ...

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Built-in Fake Objects

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While mock objects are perfect instruments for unit testing, mocking through mock frameworks may turn your unit tests into an unmaintainable mess. The root cause of this complexity is that our objects are too big. They have many methods and these methods return other objects, which also have methods. When we pass a mock version of such an object as ...

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Akka Notes – Actor Messaging – 1

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From the introductory first part of the Akka Notes, we saw a bird’s eye view of Actors in the Akka Toolkit. In this second part of the Akka Notes, we’ll look at the messaging part of Actors. As for the example, we would use the same Student-Teacher example that we discussed earlier. In this first part of Actor Messaging, we’ll ...

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Hazelcast’s MapLoader pitfalls

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One of the core data structures provided by Hazelcast is IMap<K, V> extendingjava.util.concurrent.ConcurrentMap – which is basically a distributed map, often used as cache. You can configure such map to use custom MapLoader<K, V> – piece of Java code that will be asked every time you try to .get()something from that map (by key) which is not yet there. This ...

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Log your miles and community runs: Java EE 7 Real World Experience

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miles2run.org is an easy way to track your running activities and share with friends and families. Day-based or distance-based goals can be created and then tracked. It also allows to create community run goals and have multiple runners participate and track their activities towards that goal. You can also find out local runners and connect with them. The project was started to help track running activities for #JavaOneStreak. The ...

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Asynchronous SQL Execution with jOOQ and Java 8’s CompletableFuture

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Reactive programming is the new buzzword, which essentially just means asynchronous programming or messaging. Fact is that functional syntax greatly helps with structuring asynchronous execution chains, and today, we’ll see how we can do this in Java 8 using jOOQ and the new CompletableFuture API. In fact, things are quite simple:       // Initiate an asynchronous call chain ...

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