Java Provider getInfo()用法及代碼示例

java.security.Provider類的getInfo()方法用於返回提供程序及其服務的可讀描述。這可能會返回帶有相關鏈接的HTML頁麵。

用法:

public String getInfo()

返回值：此方法返回提供者及其服務的描述。

下麵是說明getInfo()方法的示例：

範例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); 
        } 
    } 
}

輸出：

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)

範例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); 
        } 
    } 
}

輸出：

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)

相關用法

注：本文由純淨天空篩選整理自RohitPrasad3大神的英文原創作品 Provider getInfo() method in Java with Examples。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。