Java in a Nutshell, 5th Edition [Electronic resources] نسخه متنی

This class is a
java.security.Permission that represents various
permissions required for Java's URL-based networking
system. See also SocketPermission, which
represents permissions to perform lower-level networking operations.
A NetPermission is defined solely by its name; no
actions list is required or supported. As of Java 1.2, there are
three NetPermission targets
defined: "setDefaultAuthenticator"
is required to call Authenticator.setDefault(
);
"requestPasswordAuthentication" to
call Authenticator.requestPasswordAuthentication(
); and
"specifyStreamHandler" to
explicitly pass a URLStreamHandler object to the
URL( ) constructor. The target
"*" is a
wildcard that represents all defined
NetPermission targets.

System administrators configuring security policies must be familiar with
this class and the permissions it represents. System programmers may
use this class, but application programmers never need to use it
explicitly.

Figure 12-13. java.net.NetPermission

public final class

NetPermission extends java.security.BasicPermission {
// Public Constructors
public

NetPermission (String

name );
public

NetPermission (String

name , String

actions );
}