THE PACKAGE JAVA.LANG

java.lang.SecurityManager

20.17

20.17.24

public void checkListen(int port)

throws SecurityException

The general contract of this method is that it should throw a

SecurityException

if listening to the specified local network

port

 is not permitted.

This method is invoked for the current security manager ( 20.18.4) by the

constructor of one argument for class

java.net.DatagramSocket

 and by the

constructors for class

java.net.ServerSocket

. (These classes are not docu 

mented in this specification. See

The Java Application Programming Interface

.)

The

checkListen

 method defined by class

SecurityManager

 always throws

a

SecurityException

. A subclass must override this method if listening to a

local network port is to be permitted with a security manager installed.

20.17.25

public void checkAccept(String host, int port)

throws SecurityException

The general contract of this method is that it should throw a

SecurityException

if accepting a connection from the indicated

port

 of the indicated network

host

is not permitted.

This method is invoked for the current security manager ( 20.18.4) by method

accept

 of class

java.net.ServerSocket

. (This class is not documented in this

specification. See

The Java Application Programming Interface

.)

The

checkAccept

 method defined by class

SecurityManager

 always throws

a

SecurityException

. A subclass must override this method if accepting a net 

work connection is to be permitted with a security manager installed.

20.17.26

public void checkSetFactory()

throws SecurityException

The general contract of this method is that it should throw a

SecurityException

if installing a  factory  for a socket, server socket, URL, or URL connection is not

permitted.

This method is invoked for the current security manager ( 20.18.4) by:

method

setSocketFactory

 of class

java.net.ServerSocket

method

setSocketImplFactory

 of class

java.net.Socket

method

setURLStreamHandlerFactory

 of class

java.net.URL

method

setContentHandlerFactory

of class

java.net.URLConnection

(These classes are not documented in this specification. See

The Java Application

Programming Interface

.)

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