Since: API Level 1

public abstract class

Provider

extends Properties

java.lang.Object
↳	java.util.Dictionary<K, V>
	↳	java.util.Hashtable<K, V>
		↳	java.util.Properties
			↳	java.security.Provider

Known Direct Subclasses

AuthProvider

Class Overview

Provider is the abstract superclass for all security providers in the Java security infrastructure.

Summary

Nested Classes
class	Provider.Service	`Service` represents a service in the Java Security infrastructure.

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Inherited Fields

From class java.util.Properties

Protected Constructors
	Provider(String name, double version, String info) Constructs a new instance of `Provider` with its name, version and description.

Public Methods
synchronized void	clear() Clears all properties used to look up services implemented by this `Provider`.
synchronized Set<Entry<Object, Object>>	entrySet() Returns a set of the mappings contained in this `Hashtable`.
String	getInfo() Returns a description of the services being provided.
String	getName() Returns the name of this provider.
synchronized Provider.Service	getService(String type, String algorithm) Returns the service with the specified `type` implementing the specified `algorithm`, or `null` if no such implementation exists.
synchronized Set<Provider.Service>	getServices() Returns an unmodifiable `Set` of all services registered by this provider.
double	getVersion() Returns the version number for the services being provided.
Set<Object>	keySet() Returns a set of the keys contained in this `Hashtable`.
synchronized void	load(InputStream inStream) Loads properties from the specified `InputStream`.
synchronized Object	put(Object key, Object value) Maps the specified `key` property name to the specified `value`.
synchronized void	putAll(Map<?, ?> t) Copies all from the provided map to this `Provider`.
synchronized Object	remove(Object key) Removes the specified `key` and its associated value from this `Provider`.
String	toString() Returns a string containing a concise, human-readable description of this `Provider` including its name and its version.
Collection<Object>	values() Returns a collection of the values contained in this `Hashtable`.

Protected Methods
synchronized void	putService(Provider.Service s) Adds a `Service` to this `Provider`.
synchronized void	removeService(Provider.Service s) Removes a previously registered `Service` from this `Provider`.

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Inherited Methods

From class java.util.Properties

String	getProperty(String name, String defaultValue) Searches for the property with the specified name.
String	getProperty(String name) Searches for the property with the specified name.
void	list(PrintStream out) Lists the mappings in this `Properties` to the specified `PrintStream` in a human readable form.
void	list(PrintWriter writer) Lists the mappings in this `Properties` to the specified `PrintWriter` in a human readable form.
synchronized void	load(InputStream in) Loads properties from the specified `InputStream`.
synchronized void	loadFromXML(InputStream in) Loads the properties from an `InputStream` containing the properties in XML form.
Enumeration<?>	propertyNames() Returns all of the property names that this `Properties` object contains.
void	save(OutputStream out, String comment) This method is deprecated. This method ignores any `IOException` thrown while writing -- use `store(OutputStream, String)` instead for better exception handling.
Object	setProperty(String name, String value) Maps the specified key to the specified value.
synchronized void	store(OutputStream out, String comment) Stores the mappings in this `Properties` to the specified `OutputStream`, putting the specified comment at the beginning.
void	storeToXML(OutputStream os, String comment) Writes all properties stored in this instance into the `OutputStream` in XML representation.
synchronized void	storeToXML(OutputStream os, String comment, String encoding) Writes all properties stored in this instance into the `OutputStream` in XML representation.

From class java.util.Hashtable

synchronized void	clear() Removes all key/value pairs from this `Hashtable`, leaving the size zero and the capacity unchanged.
synchronized Object	clone() Returns a new `Hashtable` with the same key/value pairs, capacity and load factor.
boolean	contains(Object value) Returns true if this `Hashtable` contains the specified object as the value of at least one of the key/value pairs.
synchronized boolean	containsKey(Object key) Returns true if this `Hashtable` contains the specified object as a key of one of the key/value pairs.
synchronized boolean	containsValue(Object value) Searches this `Hashtable` for the specified value.
synchronized Enumeration<V>	elements() Returns an enumeration on the values of this `Hashtable`.
synchronized Set<Entry<K, V>>	entrySet() Returns a set of the mappings contained in this `Hashtable`.
synchronized boolean	equals(Object object) Compares this `Hashtable` with the specified object and indicates if they are equal.
synchronized V	get(Object key) Returns the value associated with the specified key in this `Hashtable`.
synchronized int	hashCode() Returns an integer hash code for this object.
synchronized boolean	isEmpty() Returns true if this `Hashtable` has no key/value pairs.
synchronized Set<K>	keySet() Returns a set of the keys contained in this `Hashtable`.
synchronized Enumeration<K>	keys() Returns an enumeration on the keys of this `Hashtable` instance.
synchronized V	put(K key, V value) Associate the specified value with the specified key in this `Hashtable`.
synchronized void	putAll(Map<? extends K, ? extends V> map) Copies every mapping to this `Hashtable` from the specified map.
void	rehash() Increases the capacity of this `Hashtable`.
synchronized V	remove(Object key) Removes the key/value pair with the specified key from this `Hashtable`.
synchronized int	size() Returns the number of key/value pairs in this `Hashtable`.
synchronized String	toString() Returns the string representation of this `Hashtable`.
synchronized Collection<V>	values() Returns a collection of the values contained in this `Hashtable`.

From class java.util.Dictionary

From class java.lang.Object

Object	clone() Creates and returns a copy of this `Object`.
boolean	equals(Object o) Compares this instance with the specified object and indicates if they are equal.
void	finalize() Is called before the object's memory is being reclaimed by the VM.
final Class<? extends Object>	getClass() Returns the unique instance of `Class` which represents this object's class.
int	hashCode() Returns an integer hash code for this object.
final void	notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
final void	notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
String	toString() Returns a string containing a concise, human-readable description of this object.
final void	wait(long millis, int nanos) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.
final void	wait(long millis) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.
final void	wait() Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object.

From interface java.util.Map

abstract void	clear() Removes all elements from this `Map`, leaving it empty.
abstract boolean	containsKey(Object key) Returns whether this `Map` contains the specified key.
abstract boolean	containsValue(Object value) Returns whether this `Map` contains the specified value.
abstract Set<Entry<K, V>>	entrySet() Returns a `Set` containing all of the mappings in this `Map`.
abstract boolean	equals(Object object) Compares the argument to the receiver, and returns `true` if the specified object is a `Map` and both `Map`s contain the same mappings.
abstract V	get(Object key) Returns the value of the mapping with the specified key.
abstract int	hashCode() Returns an integer hash code for the receiver.
abstract boolean	isEmpty() Returns whether this map is empty.
abstract Set<K>	keySet() Returns a set of the keys contained in this `Map`.
abstract V	put(K key, V value) Maps the specified key to the specified value.
abstract void	putAll(Map<? extends K, ? extends V> map) Copies every mapping in the specified `Map` to this `Map`.
abstract V	remove(Object key) Removes a mapping with the specified key from this `Map`.
abstract int	size() Returns the number of mappings in this `Map`.
abstract Collection<V>	values() Returns a `Collection` of the values contained in this `Map`.

Protected Constructors

protected Provider (String name, double version, String info)

Since: API Level 1

Constructs a new instance of Provider with its name, version and description.

Parameters

name	the name of the provider.
version	the version of the provider.
info	a description of the provider.

Public Methods

public synchronized void clear ()

Since: API Level 1

Clears all properties used to look up services implemented by this Provider.

If a SecurityManager is installed, code calling this method needs the SecurityPermission clearProviderProperties.NAME (where NAME is the provider name) to be granted, otherwise a SecurityException will be thrown.

Throws

SecurityException	if a `SecurityManager` is installed and the caller does not have permission to invoke this method.

public synchronized Set<Entry<Object, Object>> entrySet ()

Since: API Level 1

Returns a set of the mappings contained in this Hashtable. Each element in the set is a Map.Entry. The set is backed by this Hashtable so changes to one are reflected by the other. The set does not support adding.

Returns

a set of the mappings.

public String getInfo ()

Since: API Level 1

Returns a description of the services being provided.

Returns

a description of the services being provided.

public String getName ()

Since: API Level 1

Returns the name of this provider.

Returns

the name of this provider.

public synchronized Provider.Service getService (String type, String algorithm)

Since: API Level 1

Returns the service with the specified type implementing the specified algorithm, or null if no such implementation exists.

If two services match the requested type and algorithm, the one added with the putService(Service) is returned (as opposed to the one added via put(Object, Object).

Parameters

type	the type of the service (for example `KeyPairGenerator`)
algorithm	the algorithm name (case insensitive)

Returns

the requested service, or null if no such implementation exists

public synchronized Set<Provider.Service> getServices ()

Since: API Level 1

Returns an unmodifiable Set of all services registered by this provider.

Returns

an unmodifiable Set of all services registered by this provider

public double getVersion ()

Since: API Level 1

Returns the version number for the services being provided.

Returns

the version number for the services being provided.

public Set<Object> keySet ()

Since: API Level 1

Returns a set of the keys contained in this Hashtable. The set is backed by this Hashtable so changes to one are reflected by the other. The set does not support adding.

Returns

a set of the keys.

public synchronized void load (InputStream inStream)

Since: API Level 1

Loads properties from the specified InputStream. The encoding is ISO8859-1. The Properties file is interpreted according to the following rules:

Empty lines are ignored.
Lines starting with either a "#" or a "!" are comment lines and are ignored.
A backslash at the end of the line escapes the following newline character ("\r", "\n", "\r\n"). If there's a whitespace after the backslash it will just escape that whitespace instead of concatenating the lines. This does not apply to comment lines.
A property line consists of the key, the space between the key and the value, and the value. The key goes up to the first whitespace, "=" or ":" that is not escaped. The space between the key and the value contains either one whitespace, one "=" or one ":" and any number of additional whitespaces before and after that character. The value starts with the first character after the space between the key and the value.
Following escape sequences are recognized: "\ ", "\\", "\r", "\n", "\!", "\#", "\t", "\b", "\f", and "\uXXXX" (unicode character).

Parameters

inStream	the `InputStream`.

Throws

IOException

public synchronized Object put (Object key, Object value)

Since: API Level 1

Maps the specified key property name to the specified value.

If a SecurityManager is installed, code calling this method needs the SecurityPermission putProviderProperty.NAME (where NAME is the provider name) to be granted, otherwise a SecurityException will be thrown.

Parameters

key	the name of the property.
value	the value of the property.

Returns

the value that was previously mapped to the specified key ,or null if it did not have one.

Throws

SecurityException	if a `SecurityManager` is installed and the caller does not have permission to invoke this method.

public synchronized void putAll (Map<?, ?> t)

Since: API Level 1

Copies all from the provided map to this Provider.

If a SecurityManager is installed, code calling this method needs the SecurityPermission putProviderProperty.NAME (where NAME is the provider name) to be granted, otherwise a SecurityException will be thrown.

Parameters

t	the mappings to copy to this provider.

Throws

SecurityException	if a `SecurityManager` is installed and the caller does not have permission to invoke this method.

public synchronized Object remove (Object key)

Since: API Level 1

Removes the specified key and its associated value from this Provider.

If a SecurityManager is installed, code calling this method needs the SecurityPermission removeProviderProperty.NAME (where NAME is the provider name) to be granted, otherwise a SecurityException will be thrown.

Parameters

key	the name of the property

Returns

the value that was mapped to the specified key ,or null if no mapping was present

Throws

SecurityException	if a `SecurityManager` is installed and the caller does not have the permission to invoke this method.

public String toString ()

Since: API Level 1

Returns a string containing a concise, human-readable description of this Provider including its name and its version.

Returns

a printable representation for this Provider.

public Collection<Object> values ()

Since: API Level 1

Returns a collection of the values contained in this Hashtable. The collection is backed by this Hashtable so changes to one are reflected by the other. The collection does not support adding.

Returns

a collection of the values.

Protected Methods

protected synchronized void putService (Provider.Service s)

Since: API Level 1

Adds a Service to this Provider. If a service with the same name was registered via this method, it is replace.

If a SecurityManager is installed, code calling this method needs the SecurityPermission putProviderProperty.NAME (where NAME is the provider name) to be granted, otherwise a SecurityException will be thrown.

Parameters

s	the `Service` to register

Throws

SecurityException	if a `SecurityManager` is installed and the caller does not have permission to invoke this method

protected synchronized void removeService (Provider.Service s)

Since: API Level 1

Removes a previously registered Service from this Provider.

If a SecurityManager is installed, code calling this method needs the SecurityPermission removeProviderProperty.NAME (where NAME is the provider name) to be granted, otherwise a SecurityException will be thrown.

Parameters

s	the `Service` to remove

Throws

SecurityException	if a `SecurityManager` is installed and the caller does not have permission to invoke this method
NullPointerException	if `s` is `null`

Interfaces

Classes

Enums

Exceptions

Provider

Class Overview

Summary

Protected Constructors

protected Provider (String name, double version, String info)

Parameters

Public Methods

public synchronized void clear ()

Throws

public synchronized Set<Entry<Object, Object>> entrySet ()

Returns

public String getInfo ()

Returns

public String getName ()

Returns

public synchronized Provider.Service getService (String type, String algorithm)

Parameters

Returns

public synchronized Set<Provider.Service> getServices ()

Returns

public double getVersion ()

Returns

public Set<Object> keySet ()

Returns

public synchronized void load (InputStream inStream)

Parameters

Throws

public synchronized Object put (Object key, Object value)

Parameters

Returns

Throws

public synchronized void putAll (Map<?, ?> t)

Parameters

Throws

public synchronized Object remove (Object key)

Parameters

Returns

Throws

public String toString ()

Returns

public Collection<Object> values ()

Returns

Protected Methods

protected synchronized void putService (Provider.Service s)

Parameters

Throws

protected synchronized void removeService (Provider.Service s)

Parameters

Throws