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Java Priority Queue (PriorityQueue) Example

We know that Queue follows First-In-First-Out model but sometimes we need to process the objects in the queue based on the priority. For example, let’s say we have an application ...
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DSL based approach to input Graph data in graph theory based java programs

Most of us have coded some programs which deal with graph theory algorithms like finding the shortest path between two vertices, finding the minimum spanning tree for a given graph ...
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Log4j 2: Performance close to insane

Recently a respected member of the Apache community tried Log4j 2 and wrote on Twitter: @TheASF #log4j2 rocks big times! Performance is close to insane ^^ http://t.co/04K6F4Xkaa — ...
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ArrayList Using Memory Mapped File

Introduction In-Memory computing is picking up due to affordable hardware, most of the data is kept in RAM to meet latency and throughput goal, but keeping data in RAM create Garbage ...
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Passivation and Activation of View Objects with Transient Attributes

Within passivation/activation cycle of application modules the framework passivates and activates view objects as well. Usually the framework saves information about VO’s state, ...
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Monitor full page, non AJAX, requests to be notified

Recently, working on new charts and chart “exporting service” in JSF, I’ve faced a quite common problem. When you execute a long-running task (action), you would like ...
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Getting started with the Neo4j Java Rest Binding (Heroku deployment)

Believe it or not, the last couple of days were my first attempt at using Neo4j’s Java Rest Binding. My earlier application on Heroku, Flavorwocky, used the Grails Neo4j plugin and ...
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5 Coding Hacks to Reduce GC Overhead

In this post we’ll look at five ways in which we can use efficient coding to help our garbage collector spend less CPU time allocating and freeing memory, and reduce GC overhead. ...
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C++ like Java for low latency

Overview Previously I wrote an article on C like Java.  This is term I had come across before. However, on reflection I thought C++ like Java is a better term as you still use OOP ...
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Creating External DSLs using ANTLR and Java

In my previous post quite sometime back I had written about Internal DSLs using Java. In the book Domain Specific Languages by Martin Fowler, he discusses about another type of DSL ...
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