java.security

Class Provider

java.lang.Object

java.util.Dictionary<K,V>

java.util.Hashtable<Object,Object>

java.util.Properties

java.security.Provider

All Implemented Interfaces:

Serializable, Cloneable, Map<Object,Object>

Direct Known Subclasses:

AuthProvider, BouncyCastleProvider, JSSEProvider, OpenSSLProvider

public abstract class Provider
extends Properties

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

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Provider.Service Service represents a service in the Java Security infrastructure.

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Field Summary

Fields inherited from class java.util.Properties

defaults

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Provider(String name, double version, String info) Constructs a new instance of Provider with its name, version and description.

Method Summary

Modifier and Type	Method and Description
void	clear() Clears all properties used to look up services implemented by this Provider.
Set<Map.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.
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.
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.
void	load(InputStream inStream) Loads properties from the specified InputStream, assumed to be ISO-8859-1.
Object	put(Object key, Object value) Maps the specified key property name to the specified value.
void	putAll(Map<?,?> t) Copies all from the provided map to this Provider.
protected void	putService(Provider.Service s) Adds a Service to this Provider.
Object	remove(Object key) Removes the specified key and its associated value from this Provider.
protected void	removeService(Provider.Service s) Removes a previously registered Service 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.

Methods inherited from class java.util.Properties

getProperty, getProperty, list, list, load, loadFromXML, propertyNames, save, setProperty, store, store, storeToXML, storeToXML, stringPropertyNames

Methods inherited from class java.util.Hashtable

clone, contains, containsKey, containsValue, elements, equals, get, hashCode, isEmpty, keys, rehash, size

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, copyOf, entry, forEach, getOrDefault, merge, of, of, of, of, of, of, of, of, of, of, of, ofEntries, putIfAbsent, remove, replace, replace, replaceAll

Constructor Detail

Provider

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

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.

Method Detail

getName

public String getName()

Returns the name of this provider.

Returns:

the name of this provider.

getVersion

public double getVersion()

Returns the version number for the services being provided.

Returns:

the version number for the services being provided.

getInfo

public String getInfo()

Returns a description of the services being provided.

Returns:

a description of the services being provided.

toString

public String toString()

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

Overrides:

toString in class Hashtable<Object,Object>

Returns:

a printable representation for this Provider.

clear

public void clear()

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

Specified by:

clear in interface Map<Object,Object>

Overrides:

clear in class Hashtable<Object,Object>

See Also:

Hashtable.isEmpty(), Hashtable.size

load

public void load(InputStream inStream)
          throws IOException

Description copied from class: Properties

Loads properties from the specified InputStream, assumed to be ISO-8859-1. See "Character Encoding".

Overrides:

load in class Properties

Parameters:

inStream - the InputStream

Throws:

IOException

putAll

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

Copies all from the provided map to this Provider.

Specified by:

putAll in interface Map<Object,Object>

Overrides:

putAll in class Hashtable<Object,Object>

Parameters:

t - the mappings to copy to this provider.

entrySet

public Set<Map.Entry<Object,Object>> entrySet()

Description copied from class: Hashtable

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.

Specified by:

entrySet in interface Map<Object,Object>

Overrides:

entrySet in class Hashtable<Object,Object>

Returns:

a set of the mappings.

keySet

public Set<Object> keySet()

Description copied from class: Hashtable

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.

Specified by:

keySet in interface Map<Object,Object>

Overrides:

keySet in class Hashtable<Object,Object>

Returns:

a set of the keys.

values

public Collection<Object> values()

Description copied from class: Hashtable

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.

Specified by:

values in interface Map<Object,Object>

Overrides:

values in class Hashtable<Object,Object>

Returns:

a collection of the values.

put

public Object put(Object key,
                  Object value)

Maps the specified key property name to the specified value.

Specified by:

put in interface Map<Object,Object>

Overrides:

put in class Hashtable<Object,Object>

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.

See Also:

Hashtable.elements(), Hashtable.get(java.lang.Object), Hashtable.keys(), Object.equals(java.lang.Object)

remove

public Object remove(Object key)

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

Specified by:

remove in interface Map<Object,Object>

Overrides:

remove in class Hashtable<Object,Object>

Parameters:

key - the name of the property

Returns:

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

See Also:

Hashtable.get(java.lang.Object), Hashtable.put(K, V)

getService

public 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.

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

getServices

public Set<Provider.Service> getServices()

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

Returns:

an unmodifiable Set of all services registered by this provider

putService

protected void putService(Provider.Service s)

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

Parameters:

s - the Service to register

removeService

protected void removeService(Provider.Service s)

Removes a previously registered Service from this Provider.

Parameters:

s - the Service to remove

Throws:

NullPointerException - if s is null