Source code to refer in order to understanding how jasypt able to "intercept" and "massage" the configuration value

[hannah23280]

Hi,
When our application (or spring framework) retrieves the values in the proeprties/yaml file, this jasypt library seem to be able to intercept the retrieval and perform decryption to the values.
I am interested in how your library does that. Do u mind guiding me which core of the source code i should refer to, in order to understand how the "interception" is done

*I follow online to create a custom class that extends PropertiesFactoryBean, and then create some beans. When i tested my implementation, it does not work. Hence interested to see how you done it.

I sincerely apologize if this is not the forum to ask this question