THE PACKAGE JAVA.LANG

java.lang.SecurityManager

20.17

The

checkAccess

 method defined by class

SecurityManager

 always throws

a

SecurityException

. A subclass must override this method if a thread modifi 

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

20.17.12

public void checkAccess(ThreadGroup g)

throws SecurityException

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

SecurityException

if an operation that would modify the thread group

g

 is not permitted.

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

checkAccess

 ( 20.21.4) of class

ThreadGroup

.

The

checkAccess

 method defined by class

SecurityManager

 always throws

a

SecurityException

. A subclass must override this method if a thread group

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

20.17.13

public void checkExit(int status)

throws SecurityException

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

SecurityException

if an exit operation that would terminate the running Java Virtual Machine is not

permitted.

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

exit

 ( 20.16.2) of class

Runtime

.

The

checkExit

 method defined by class

SecurityManager

 always throws a

SecurityException

. A subclass must override this method if the exit operation

is to be permitted with a security manager installed.

20.17.14

public void checkExec(String cmd)

throws SecurityException

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

SecurityException

if a command

exec

 operation is not permitted. The argument

cmd

 is the name of

the command to be executed.

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

exec

 ( 20.16.6) of class

Runtime

.

The

checkExec

 method defined by class

SecurityManager

 always throws a

SecurityException

. A subclass must override this method if a command

exec

operation is to be permitted with a security manager installed.

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