Class PropertyPermission
java.lang.Object
java.security.Permission
java.security.BasicPermission
java.util.PropertyPermission
- All Implemented Interfaces:
Serializable,Guard
This class is for property permissions.
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 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".
The actions string is converted to lowercase before processing.
- API Note:
- This permission cannot be used for controlling access to resources as the Security Manager is no longer supported.
- Since:
- 1.2
- See Also:
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Constructor Summary
ConstructorsConstructorDescriptionPropertyPermission(String name, String actions) Creates a new PropertyPermission object with the specified name. -
Method Summary
Modifier and TypeMethodDescriptionbooleanChecks two PropertyPermission objects for equality.Returns the "canonical string representation" of the actions.inthashCode()Returns the hash code value for this object.booleanChecks if this PropertyPermission object "implies" the specified permission.Returns a new PermissionCollection object for storing PropertyPermission objects.Methods declared in class java.security.Permission
checkGuard, getName, toString
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Constructor Details
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PropertyPermission
Creates a new PropertyPermission object with the specified name. The name is the name of the system property, and actions contains a comma-separated list of the desired actions granted on the property. Possible actions are "read" and "write".- Parameters:
name- the name of the PropertyPermission.actions- the actions string.- Throws:
NullPointerException- ifnameisnull.IllegalArgumentException- ifnameis empty or ifactionsis invalid.
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Method Details
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implies
Checks if this PropertyPermission object "implies" the specified permission.More specifically, this method returns true if:
- p is an instanceof PropertyPermission,
- p's actions are a subset of this object's actions, and
- p's name is implied by this object's name. For example, "java.*" implies "java.home".
- Overrides:
impliesin classBasicPermission- Parameters:
p- the permission to check against.- Returns:
- true if the specified permission is implied by this object, false if not.
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equals
Checks two PropertyPermission objects for equality. Checks that obj is a PropertyPermission, and has the same name and actions as this object.- Overrides:
equalsin classBasicPermission- Parameters:
obj- the object we are testing for equality with this object.- Returns:
- true if obj is a PropertyPermission, and has the same name and actions as this PropertyPermission object.
- See Also:
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hashCode
public int hashCode()Returns the hash code value for this object. The hash code used is the hash code of this permissions name, that is,getName().hashCode(), wheregetNameis from the Permission superclass.- Overrides:
hashCodein classBasicPermission- Returns:
- a hash code value for this object.
- See Also:
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getActions
Returns the "canonical string representation" of the actions. That is, this method always returns present actions in the following order: read, write. For example, if this PropertyPermission object allows both write and read actions, a call togetActionswill return the string "read,write".- Overrides:
getActionsin classBasicPermission- Returns:
- the canonical string representation of the actions.
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newPermissionCollection
Returns a new PermissionCollection object for storing PropertyPermission objects.- Overrides:
newPermissionCollectionin classBasicPermission- Returns:
- a new PermissionCollection object suitable for storing PropertyPermissions.
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