Java KeyFactory getProvider()用法及代码示例

java.security.KeyFactory类的getProvider()方法用于获取此KeyFactory实例使用的提供程序对象的名称。

用法:

public final Provider getProvider()

参数：此方法不带任何参数。

返回值：此方法返回此KeyFactory实例使用的Provider对象的名称。

下面是说明getProvider()方法的示例：

示例1:

// Java program to demonstrate 
// getProvider() method 
  
import java.security.*; 
import java.util.*; 
  
public class GFG1 { 
    public static void main(String[] argv) 
    { 
  
        try { 
            // creating object of keyfactory 
            KeyFactory keyFactory 
                = KeyFactory.getInstance("DSA"); 
  
            // getting the Provider 
            // of the KeyFactory keyfactory 
            // by using method getProvider() 
            Provider provider 
                = keyFactory.getProvider(); 
  
            // printing the provider name 
            System.out.println( 
                "Provider name: "
                + provider.getName()); 
        } 
  
        catch (NoSuchAlgorithmException e) { 
  
            System.out.println(e); 
        } 
    } 
}

输出：

Provider name: SUN

示例2:

// Java program to demonstrate 
// getProvider() method 
  
import java.security.*; 
import java.util.*; 
  
public class GFG1 { 
    public static void main(String[] argv) 
    { 
  
        try { 
  
            // creating the object of KeyFactory 
            KeyFactory sr 
                = KeyFactory 
                      .getInstance("DiffieHellman"); 
  
            // getting the Provider of the KeyFactory sr 
            // by using method getProvider() 
            Provider provider = sr.getProvider(); 
  
            // printing the provider name 
            System.out.println( 
                "Provider name: "
                + provider.getName()); 
        } 
  
        catch (NoSuchAlgorithmException e) { 
            System.out.println(e); 
        } 
    } 
}

输出：

Provider name: SunJCE

参考： https://docs.oracle.com/javase/9/docs/api/java/security/KeyFactory.html#getProvider–

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注：本文由纯净天空筛选整理自RohitPrasad3大神的英文原创作品 KeyFactory getProvider() method in Java with Examples。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。