jar - How can I use two versions of the same library in the same project in Java? -

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this question has answer here:

let's i'm using xmlsec-1.5.8.jar 1 part of application (it has used this).

then let's i'm adding new feature application , new feature requires use of xmlsec-2.0.5.jar.

i don't want replace xmlsec's usage old code because don't want re-test code has been working (much of code of don't know how works because created before arrived @ company).

is there way in java use xmlsec-1.5.8.jar classes in 1 part of project , use xmlsec-2.0.5.jar in part?

you need class loaders.

it's pretty tricky, here's explanation you.

java, classpath, classloading => multiple versions of same jar/project

you'll have unload old jar, load new jar, run whatever new function are, unload newer jar , reload older jar.


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