Class java.security.Provider - JDK 5 Documentation v1.1.8, Java 2 SDK 英文文档

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Class java.security.Provider

java.lang.Object
   |
   +----java.util.Dictionary
           |
           +----java.util.Hashtable
                   |
                   +----java.util.Properties
                           |
                           +----java.security.Provider

public abstract class Provider
extends Properties

This class represents a "provider" for the Java Security API. A provider implements some or all parts of Java Security, including:

Algorithms (such as DSA, RSA, MD5 or SHA-1).
Key generation and management facilities (such as for algorithm-specific keys).

Each provider has a name and a version number, and is configured in each runtime it is installed in.

There is a default provider that comes standard with the JDK. It is called the SUN Provider. See The Provider Class in the "Java Cryptography Architecture API Specification & Reference" for information about how providers work and how to install them.

Provider(String, double, String): Constructs a provider with the specified name, version number, and information.

getInfo(): Returns a human-readable description of the provider and its services.
getName(): Returns the name of this provider.
getVersion(): Returns the version number for this provider.
toString(): Returns a string with the name and the version number of this provider.

Provider

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

Constructs a provider with the specified name, version number, and information.

Parameters:: name - the provider name.; version - the provider version number.; info - a description of the provider and its services.

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 this provider.

Returns:: the version number for this provider.

getInfo

 public String getInfo()

Returns a human-readable description of the provider and its services. This may return an HTML page, with relevant links.

Returns:: a description of the provider and its services.

toString

 public String toString()

Returns a string with the name and the version number of this provider.

Returns:: the string with the name and the version number for this provider.
Overrides:: toString in class Hashtable

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