Core Java
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Blocking Queue example to execute commands
import java.util.concurrent.BlockingQueue; import java.util.concurrent.LinkedBlockingQueue; private BlockingQueue<Command> workQueue = new LinkedBlockingQueue<Command>(); public void addCommand(Command command) { workQueue.offer(command); } public Object call()…
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Reentrant Lock example of a task runner
With this example we are going to demonstrate how to implement a ReentrantLock of a task runner. The ReentrantLock is…
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Reentrant ReadWriteLock example of value calculator
This is an example of how to use a ReentrantReadWriteLock of a value calculator. We have implemented a method that…
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Semaphores example limiting URL connections
In this example we shall show you how to use a Semaphore for limiting URL connections. We have implemented a…
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Exchanger example passing logs to a background logger
With this example we are going to demonstrate how to create an Exchanger passing logs to a background logger. We…
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Store preferences to user space
This is an example of how to store Preferences to user space. The Preferences class allows applications to store and retrieve…
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Read preferences from user space
In this example we shall show you how to read the Preferences from user space. To read the Preferences from…
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Find elements by id with XPath
With this example we are going to demonstrate how to find elements by Id using XPath. The XPath language provides…
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Find elements by content with XPath
This is an example of how to find elements by content using XPath. The XPath language provides a simple, concise…
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Find elements by attributes with XPath
In this example we shall show you how to find elements by attributes using XPath. The XPath language provides a…
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