程序包 java.security

类 BasicPermission

java.lang.Object

java.security.Permission

java.security.BasicPermission

所有已实现的接口:

Serializable, Guard

直接已知子类:

AuthPermission, LinkPermission, LoggingPermission, NetPermission, PropertyPermission, ReflectPermission, RuntimePermission, SecurityPermission, SerializablePermission, SQLPermission, SSLPermission

public abstract class BasicPermission
extends Permission
implements Serializable

The BasicPermission class extends the Permission class, and can be used as the base class for permissions that want to follow the same naming convention as BasicPermission.

The name for a BasicPermission is the name of the given permission (for example, "exit", "setFactory", "print.queueJob", etc). The naming convention follows the hierarchical property naming convention. An asterisk may appear by itself, or if immediately preceded by a "." may appear at the end of the name, to signify a wildcard match. For example, "*" and "java.*" signify a wildcard match, while "*java", "a*b", and "java*" do not.

The action string (inherited from Permission) is unused. Thus, BasicPermission is commonly used as the base class for "named" permissions (ones that contain a name but no actions list; you either have the named permission or you don't.) Subclasses may implement actions on top of BasicPermission, if desired.

另请参阅:

Permission, Permissions, PermissionCollection, SecurityManager, 序列化表格

构造器概要

构造器

构造器	说明
BasicPermission(String name)	Creates a new BasicPermission with the specified name.
BasicPermission(String name, String actions)	Creates a new BasicPermission object with the specified name.

方法概要

限定符和类型	方法	说明
String	getActions()	Returns the canonical string representation of the actions, which currently is the empty string "", since there are no actions for a BasicPermission.
boolean	implies(Permission p)	Checks if the specified permission is "implied" by this object.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从类继承的方法 java.security.Permission

checkGuard, getName, newPermissionCollection

构造器详细资料

BasicPermission

public BasicPermission(String name)

Creates a new BasicPermission with the specified name. Name is the symbolic name of the permission, such as "setFactory", "print.queueJob", or "topLevelWindow", etc.

参数:

name - the name of the BasicPermission.

抛出:

NullPointerException - if name is null.

IllegalArgumentException - if name is empty.

BasicPermission

public BasicPermission(String name,
                       String actions)

Creates a new BasicPermission object with the specified name. The name is the symbolic name of the BasicPermission, and the actions String is currently unused.

参数:

name - the name of the BasicPermission.

actions - ignored.

抛出:

NullPointerException - if name is null.

IllegalArgumentException - if name is empty.

方法详细资料

implies

public boolean implies(Permission p)

Checks if the specified permission is "implied" by this object.

More specifically, this method returns true if:

• p's class is the same as this object's class, and
• p's name equals or (in the case of wildcards) is implied by this object's name. For example, "a.b.*" implies "a.b.c".

指定者:

implies 在类中 Permission

参数:

p - the permission to check against.

返回:

true if the passed permission is equal to or implied by this permission, false otherwise.

getActions

public String getActions()

Returns the canonical string representation of the actions, which currently is the empty string "", since there are no actions for a BasicPermission.

指定者:

getActions 在类中 Permission

返回:

the empty string "".