java.lang.Object
- java.security.Permission
- - java.security.BasicPermission

All Implemented Interfaces:

Serializable, Guard

Direct Known Subclasses:

AudioPermission, AuthPermission, AWTPermission, DelegationPermission, JAXBPermission, LinkPermission, LoggingPermission, ManagementPermission, MBeanServerPermission, MBeanTrustPermission, NetPermission, PropertyPermission, ReflectPermission, RuntimePermission, SecurityPermission, SerializablePermission, SQLPermission, SSLPermission, SubjectDelegationPermission, WebServicePermission
```
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.*" are valid, while "*java", "a*b", and "java*" are not valid.
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.

See Also:
Permission, Permissions, PermissionCollection, SecurityManager, Serialized Form

Constructor Summary

Constructors
Constructor and Description
`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.

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Method Summary

Methods
Modifier and Type	Method and Description
`boolean`	`equals(Object obj)` Checks two BasicPermission objects for equality.
`String`	`getActions()` Returns the canonical string representation of the actions, which currently is the empty string "", since there are no actions for a BasicPermission.
`int`	`hashCode()` Returns the hash code value for this object.
`boolean`	`implies(Permission p)` Checks if the specified permission is "implied" by this object.
`PermissionCollection`	`newPermissionCollection()` Returns a new PermissionCollection object for storing BasicPermission objects.

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Methods inherited from class java.security.Permission
checkGuard, getName, toString

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - 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.
    
    Parameters:
    name - the name of the BasicPermission.
    
    Throws:
    
    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.
    
    Parameters:
    name - the name of the BasicPermission.
    actions - ignored.
    
    Throws:
    
    NullPointerException - if name is null.
    
    IllegalArgumentException - if name is empty.
- Method Detail
  - 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".
    Specified by:
    
    implies in class Permission
    
    Parameters:
    p - the permission to check against.
    
    Returns:
    true if the passed permission is equal to or implied by this permission, false otherwise.
  - equals
```
public boolean equals(Object obj)
```
    Checks two BasicPermission objects for equality. Checks that obj's class is the same as this object's class and has the same name as this object.
    
    Specified by:
    
    equals in class Permission
    
    Parameters:
    obj - the object we are testing for equality with this object.
    
    Returns:
    true if obj's class is the same as this object's class and has the same name as this BasicPermission object, false otherwise.
    See Also:
    Object.hashCode(), HashMap
  - hashCode
```
public int hashCode()
```
    Returns the hash code value for this object. The hash code used is the hash code of the name, that is, getName().hashCode(), where getName is from the Permission superclass.
    
    Specified by:
    
    hashCode in class Permission
    
    Returns:
    a hash code value for this object.
    See Also:
    Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)
  - 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.
    
    Specified by:
    
    getActions in class Permission
    
    Returns:
    the empty string "".
  - newPermissionCollection
```
public PermissionCollection newPermissionCollection()
```
    Returns a new PermissionCollection object for storing BasicPermission objects.
    BasicPermission objects must be stored in a manner that allows them to be inserted in any order, but that also enables the PermissionCollection implies method to be implemented in an efficient (and consistent) manner.
    
    Overrides:
    
    newPermissionCollection in class Permission
    
    Returns:
    a new PermissionCollection object suitable for storing BasicPermissions.

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Dokument erstellt 11/06/2005, zuletzt geändert 04/03/2020
Quelle des gedruckten Dokuments:https://www.gaudry.be/de/java-api-rf-java/security/basicpermission.html

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Referenzen

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Inhaltsverzeichnis Haut

Class BasicPermission

Constructor Summary

Method Summary

Methods inherited from class java.security.Permission

Methods inherited from class java.lang.Object

Constructor Detail

BasicPermission

BasicPermission

Method Detail

implies

equals

hashCode

getActions

newPermissionCollection

Referenzen