Serializable, Guardpublic 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.*" and "*" signify a wildcard match, while "*java" and "a*b" do not.
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| 构造器 | 说明 |
|---|---|
PropertyPermission(String name,
String actions) |
Creates a new PropertyPermission object with the specified name.
|
getActions, impliesclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitcheckGuard, getName, newPermissionCollectionpublic 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.