CODEWITHSUNDEEP
javajvm
M Sach
M Sach

Reputation: 34424

Dynamic class loading as one of the reason of permgen?

On different sites , Dynamic class loading is given as one of the reason of permgen problem.

As per my understanding , Dynamic class loading is loading the class as and when it is required.Alonwith that if Class A is loaded and it is referring another class B , it will also be loaded along with that. This is Dynamic class loading. Right? If yes, this is essential and inbuilt feature of JVM. What we can do about it?

Or my understanding is wrong here. when we say Dynamic class loading , are we reffering to custom class loaders here?

My last question related to above is, Class is loaded once by customer loader. So when we do hotdeployment on application server, how appserver loads the new version of class. Does it use different class loader here?

Upvotes: 1

Views: 302

Answers (1)

Dave Newton
Dave Newton

Reputation: 160271

No, dynamic class loading refers to loading classes during runtime that are unknown at compile time, e.g., via Class.forName, or reflection (1, 2).

Upvotes: 3

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