public final class PropertyPermission extends BasicPermission
The name is the name of the property ("java.home", "os.name", etc). The naming convention follows the hierarchical property naming convention. Also, an asterisk may appear at the end of the name, following a ".", or by itself, to signify a wildcard match. For example: "java.*" or "*" is valid, "*java" or "a*b" is not valid.
The actions to be granted are passed to the constructor in a string containing a list of one or more comma-separated keywords. The possible keywords are "read" and "write". Their meaning is defined as follows:
System.getProperty to
be called.
System.setProperty to
be called.
The actions string is converted to lowercase before processing.
Care should be taken before granting code permission to access certain system properties. For example, granting permission to access the "java.home" system property gives potentially malevolent code sensitive information about the system environment (the Java installation directory). Also, granting permission to access the "user.name" and "user.home" system properties gives potentially malevolent code sensitive information about the user environment (the user's account name and home directory).
BasicPermission,
Permission,
Permissions,
PermissionCollection,
SecurityManager| Constructor and Description |
|---|
PropertyPermission(String name,
String actions)
Creates a new PropertyPermission object with the specified name.
|
| Modifier and Type | Method and Description |
|---|---|
boolean |
equals(Object obj)
Checks two PropertyPermission objects for equality.
|
String |
getActions()
Returns the "canonical string representation" of the actions.
|
int |
hashCode()
Returns the hash code value for this object.
|
boolean |
implies(Permission p)
Checks if this PropertyPermission object "implies" the specified
permission.
|
PermissionCollection |
newPermissionCollection()
Returns a new PermissionCollection object for storing
PropertyPermission objects.
|
checkGuard, getName, toStringpublic PropertyPermission(String name, String actions)
name - the name of the PropertyPermission.actions - the actions string.NullPointerException - if name is null.IllegalArgumentException - if name is empty or if
actions is invalid.public boolean implies(Permission p)
More specifically, this method returns true if:
implies in class BasicPermissionp - the permission to check against.public boolean equals(Object obj)
equals in class BasicPermissionobj - the object we are testing for equality with this object.Object.hashCode(),
HashMappublic int hashCode()
getName().hashCode(), where getName is
from the Permission superclass.hashCode in class BasicPermissionObject.equals(java.lang.Object),
System.identityHashCode(java.lang.Object)public String getActions()
getActions
will return the string "read,write".getActions in class BasicPermissionpublic PermissionCollection newPermissionCollection()
newPermissionCollection in class BasicPermission Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2011, Oracle and/or its affiliates. All rights reserved.
DRAFT ea-b138