Java AlgorithmParameters getAlgorithm()用法及代码示例

java.security.AlgorithmParameters类的getAlgorithm()方法用于返回与此参数生成器关联的算法的标准名称。

用法:

public final String getAlgorithm()

返回值：此方法返回算法的字符串名称。

下面是说明getAlgorithm()方法的示例：

示例1:对于算法DSA

// Java program to demonstrate 
// getAlgorithm() method 
  
import java.security.*; 
import java.util.*; 
  
public class GFG1 { 
    public static void main(String[] argv) 
    { 
        try { 
            // creating the object of 
            // AlgorithmParameters 
            // and getting instance 
            // using getInstance() method 
            AlgorithmParameters sr 
                = AlgorithmParameters 
                      .getInstance("DSA"); 
  
            // genrating the Parameters 
            // using getAlgorithm() method 
            String algo = sr.getAlgorithm(); 
  
            // printing the string algo 
            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:对于算法DiffieHellman

// Java program to demonstrate 
// getAlgorithm() method 
  
import java.security.*; 
import java.util.*; 
  
public class GFG1 { 
    public static void main(String[] argv) 
    { 
        try { 
            // creating the object of 
            // AlgorithmParameters 
            // and getting instance 
            // using getInstance() method 
            AlgorithmParameters sr 
                = AlgorithmParameters 
                      .getInstance("DiffieHellman"); 
  
            // genrating the Parameters 
            // using getAlgorithm() method 
            String algo = sr.getAlgorithm(); 
  
            // printing the string algo 
            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

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

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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 AlgorithmParameters getAlgorithm() 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。