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Editorial Team
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Asked: 2026-06-13T14:35:52+00:00

Lets say I am using some existing java library, and I only got .class

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Lets say I am using some existing java library, and I only got .class files. But not getting the result I am expecting. So I look at the source code, and see that there is some logic there, and want to see if my correct values reach the library code.

Can I log the values that reach the .class files somehow? Was thinking of AOP..?

Method from external library.

public void updateValues(String value, MyClass classValue)

For example I see this line in source code, and when this is ran, I want to intercept it, by like writing the value and classValue to log file.

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1 Answer

  1. Editorial Team

    Well if you have the source code so why just don’t debug it?

    But anyway – it is possible using AOP. You need to have that .jar file in your classpath. Lets say that you have already configured your AOP, then all you need to do is:

    <aop:pointcut id="yourPointCut" expression="execution(* package.to.your.class.YourClass.updateValues(..))" />

    This pointcut will allow you to log the values of the updateValues method.

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