Java Agent Nedir ?

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What are Java Agents?, they are basically Java libraries that include classes that implement the Java Instrumentation API. Which is available since JDK 1.5. This is a very simple API but at the same time, very powerful. It lays the foundation for application instrumentation.

The main functionality of this instrumentation is that it will allow us to add code to certain classes. And with this addition, we will be able to recompile data to be used mainly for monitoring and analysis or event logging purposes. Allowing us to obtain vital information about the application, that can help us to solve problems or obtain data that would not be possible otherwise.

The main quality of this instrumentation API is the alteration of the byte-code of the classes that are being executed by the virtual machine. Through this alteration, we will be able to perform the actions previously indicated.