20.17

java.lang.SecurityManager

THE PACKAGE JAVA.LANG

The

checkSetFactory

 method defined by class

SecurityManager

 always

throws a

SecurityException

. A subclass must override this method if a factory

installation operation is to be permitted with a security manager installed.

20.17.27

public boolean checkTopLevelWindow()

throws SecurityException

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

SecurityException

if creation of a top level window is not permitted. If creation of a top level win 

dow is permitted, then this method should return

false

 if the window ought to

bear a clear warning that it is a window for an executable applet. A returned value

of

true

 means that the security manager places no restriction on window creation.

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

constructors for class

java.awt.Window

. (This class is not documented in this

specification. See

The Java Application Programming Interface

.)

The

checkTopLevelWindow

 method defined by class

SecurityManager

always returns

false

. A subclass must override this method if a window creation

operation is to be unrestricted or forbidden with a security manager installed.

20.17.28

public void checkPackageAccess(String packageName)

throws SecurityException

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

SecurityException

if the current applet is not permitted to access the package named by the argu 

ment. This method is intended for use by Java capable web browsers.

The

checkPackageAccess

 method defined by class

SecurityManager

always throws a

SecurityException

. A subclass must override this method if

package access by an applet is to be permitted with a security manager installed.

20.17.29

public void checkPackageDefinition(String packageName)

throws SecurityException

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

SecurityException

if the current applet is not permitted to define a class (or interface) in the package

named by the argument. This method is intended for use by Java capable web

browsers.

The

checkPackageAccess

 method defined by class

SecurityManager

always throws a

SecurityException

. A subclass must override this method if

class definition by an applet is to be permitted with a security manager installed.

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