java.security.Provider类的getInfo()方法用于返回提供程序及其服务的可读描述。这可能会返回带有相关链接的HTML页面。

用法:

public String getInfo()

返回值：此方法返回提供者及其服务的描述。

下面是说明getInfo()方法的示例：

范例1：

// Java program to demonstrate

// get() method

import java.security.*;

import java.util.*;

public class GFG1 {

public static void main(String[] argv) throws Exception

{

try {

// creating the object of  KeyPairGenerator

KeyPairGenerator sr = KeyPairGenerator.getInstance("DSA", "SUN");

// getting the Provider of the KeyPairGenerator sr

// by using method getProvider()

Provider provider = sr.getProvider();

// getting the info

String info = provider.getInfo();

// printing the string info

System.out.println("info : " + info);

}

catch (NoSuchAlgorithmException e) {

System.out.println("Exception thrown : " + e);

}

}

}

输出：

info :

SUN (DSA key/parameter generation;

DSA signing; SHA-1, MD5 digests;

SecureRandom; X.509 certificates;

JKS & DKS keystores;

PKIX CertPathValidator;

PKIX CertPathBuilder;

LDAP, Collection CertStores, JavaPolicy Policy;

JavaLoginConfig Configuration)

范例2：

// Java program to demonstrate

// get() method

import java.security.*;

import java.util.*;

public class GFG1 {

public static void main(String[] argv) throws Exception

{

try {

// creating the object of  SecureRandom

SecureRandom sr = SecureRandom.getInstance("SHA1PRNG");

// getting the Provider of the SecureRandom sr

// by using method getProvider()

Provider provider = sr.getProvider();

// getting the info

String info = provider.getInfo();

// printing the string info

System.out.println("info : " + info);

}

catch (NoSuchAlgorithmException e) {

System.out.println("Exception thrown : " + e);

}

}

}

输出：

info :

SUN (DSA key/parameter generation;

DSA signing; SHA-1, MD5 digests;

SecureRandom; X.509 certificates;

JKS & DKS keystores;

PKIX CertPathValidator;

PKIX CertPathBuilder;

LDAP, Collection CertStores, JavaPolicy Policy;

JavaLoginConfig Configuration)