Oscar Chavoya Aceves highlighted The signature of this method is as...

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Oscar Chavoya Aceves thinks this is interesting:

The signature of this method is as follows:

From

Cover of Servlet & JSP: A Tutorial, Second Edition

Chapter 3: Session Management
from Servlet & JSP: A Tutorial, Second Edition
by Budi Kurniawan
Publisher: Brainy Software
Released: October 2015

Note

Which means a cast is required to recover an object from the session.

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