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Code4ReferenceList Recently Used(LRU) implementation using LinkedHashMap

Recently I stumbled on one of the Java interview questions: “Implement List-Recently-Used (LRU) Cache using Java collection class?” If you have worked on a similar problem before, ...
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MySQL error: Can’t connect to MySQL server

You may have stumbled on this MySQL error. If you have already seen this before, then it’s really easy to recognize this and fix it. But if you haven’t seen this error before, then ...
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Apache Server and JMeter debugging

I had been using JMeter to generate load for my production server to test my application. The test-plan has 13+ HTTP sampler to make different request and one Regular Expression extractor ...
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JMeter custom function implementation

JMeter provides functions that can be used in the sampler. While writing complex test-plan you feel that JMeter is lacking some of the methods. You use Beanshell script to define your ...
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Debugging SQL query in MySQL

Recently I started writing SQL query for analyzing and debugging the production code. But I was surprised to see that some queries takes longer time to execute to achieve the same output. ...
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Android: Copy-paste with Intent and support for HTML

Android provides support for copy and paste feature using ClipBoardManager. The developer.android.com provides a brief description along with an image which helps to understand the ...
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Android AlarmManager tutorial

While writing an application, need arises to schedule execution of code in future. You may require AlarmManager to schedule your work at a specified time. AlarmManager accesses to system ...
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Android dynamic and XML layout

Android activity contains various user interface components e.g Button, Radio button, List, Text field etc. The user interface component can be arranged/attached with the activity ...
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Android Homescreen Widget with AlarmManager

In this tutorial we will learn to create widget with update interval less than 30 mins using AlarmManager. New update: In Android 4.1, a new feature has been introduced ...
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Android broadcast receiver: Registering/unregistering during runtime

In the previous post, we leaned to enable and disable the Broadcast receiver added in the Android manifest file. In this post, we will learn to register and unregister broadcast receiver ...
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