java.security
public abstract class
public abstract class
java.security.Permission
| java.lang.Object | ||
| java.security.Permission | Serializable Guard | |
Abstract superclass of all classes which represent permission to access system resources.
Known Direct Subclasses
Known Indirect Subclasses
Summary
Public Constructors
| Permission(String name) | |||||
| Constructs a new instance of this class with its name set to the argument. | |||||
Public Methods
| void | checkGuard(Object obj) | ||||
| abstract | boolean | equals(Object obj) | |||
| Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison. | |||||
| abstract | String | getActions() | |||
| Answers the actions associated with the receiver. | |||||
| final | String | getName() | |||
| Answers the name of the receiver. | |||||
| abstract | int | hashCode() | |||
| Answers an integer hash code for the receiver. | |||||
| abstract | boolean | implies(Permission permission) | |||
| Indicates whether the argument permission is implied by the receiver. | |||||
| PermissionCollection | newPermissionCollection() | ||||
| Answers a new PermissionCollection for holding permissions of this class. | |||||
| String | toString() | ||||
| Answers a string containing a concise, human-readable description of the receiver. | |||||
Methods inherited
from class
java.lang.Object
Methods inherited
from interface
java.security.Guard
Details
Public Constructors
public Permission(String name)
Constructs a new instance of this class with its name set to the
argument.
Parameters
| name | String the name of the permission. |
|---|
Public Methods
public void checkGuard(Object obj)
Throws
| SecurityException |
|---|
public abstract boolean equals(Object obj)
Compares the argument to the receiver, and answers true if they represent
the same object using a class specific comparison. The
implementation in Object answers true only if the argument is the exact
same object as the receiver (==).
Parameters
| obj | Object the object to compare with this object. |
|---|
public abstract String getActions()
Answers the actions associated with the receiver. Subclasses should
return their actions in canonical form. If no actions are associated with
the receiver, the empty string should be returned.
Returns
- String the receiver's actions.
public final String getName()
Answers the name of the receiver.
Returns
- String the receiver's name.
public abstract int hashCode()
Answers an integer hash code for the receiver. Any two objects which
answer
true when passed to .equals must
answer the same value for this method.
Returns
- int the receiver's hash.
See Also
public abstract boolean implies(Permission permission)
Indicates whether the argument permission is implied by the receiver.
Parameters
| permission | Permission the permission to check. |
|---|
Returns
- boolean
trueif the argument permission is implied by the receiver, andfalseif it is not.
public PermissionCollection newPermissionCollection()
Answers a new PermissionCollection for holding permissions of this class.
Answer null if any permission collection can be used.
Returns
- PermissionCollection or null a suitable permission collection for instances of the class of the receiver.
public String toString()
Answers a string containing a concise, human-readable description of the
receiver.
Returns
- String a printable representation for the receiver.