Java中的 KeyFactory getAlgorithm() 方法及示例

Java.security.KeyFactory类的getAlgorithm( ) 方法用于获取与此KeyFactory 关联的算法的名称。
句法：

public final String getAlgorithm()

返回值：此方法返回与此 KeyFactory 关联的算法的名称。
下面是说明getAlgorithm()方法的示例。
示例 1：

Java

// Java program to demonstrate
// getAlgorithm()  method
 
import java.security.*;
import java.util.*;
import java.security.spec.*;
 
public class GFG1 {
    public static void main(String[] argv) throws Exception
    {
        try {
 
            // creating object of keyfactory
            KeyFactory keyFactory = KeyFactory.getInstance("DSA");
 
            // getting the algorithm of KeyFactory
            // using getAlgorithm() method
            String algo = keyFactory.getAlgorithm();
 
            // printing the algorithm
            System.out.println("Algorithm : " + algo);
        }
 
        catch (NoSuchAlgorithmException e) {
 
            System.out.println("Exception thrown : " + e);
        }
        catch (ProviderException e) {
 
            System.out.println("Exception thrown : " + e);
        }
    }
}

输出

Algorithm : DSA

示例 2：

Java

// Java program to demonstrate
// getAlgorithm()  method
 
import java.security.*;
import java.util.*;
import java.security.spec.*;
 
public class GFG1 {
    public static void main(String[] argv) throws Exception
    {
        try {
 
            // creating object of keyfactory
            KeyFactory keyFactory = KeyFactory
                                        .getInstance("DiffieHellman");
 
            // getting the algorithm of KeyFactory
            // using getAlgorithm() method
            String algo = keyFactory.getAlgorithm();
 
            // printing the algorithm
            System.out.println("Algorithm : " + algo);
        }
 
        catch (NoSuchAlgorithmException e) {
 
            System.out.println("Exception thrown : " + e);
        }
        catch (ProviderException e) {
 
            System.out.println("Exception thrown : " + e);
        }
    }
}

输出

Algorithm : DiffieHellman