as a feature of java ,how we can say java is secure ?
Every single feature of Java that *can* affect a host computer is checked by a
SecurityManager, e.g. an (J)Applet comes with its own security manager
that disallows a lot of actions for the (J)Applet. Even class loading and the class
code itself is under the jurisdiction of a security manager. Read the API docs
for this class for details.
kind regards,
Jos