Java SecureRandom getAlgorithm()用法及代码示例

java.security.SecureRandom类的getAlgorithm()方法用于返回由此SecureRandom对象实现的算法的名称。

用法:

public String getAlgorithm()

返回值：此方法返回算法的名称，如果无法确定算法名称，则返回未知。

下面是说明getAlgorithm()方法的示例：

示例1:

// 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 SecureRandom 
            SecureRandom sr = SecureRandom.getInstance("SHA1PRNG"); 
  
            // geting the Algorithm 
            // by using method getAlgorithm() 
            String algo = sr.getAlgorithm(); 
  
            // printing the string algo 
            System.out.println("Algorithm: " + algo); 
        } 
  
        catch (NoSuchAlgorithmException e) { 
  
            System.out.println("Exception thrown : " + e); 
        } 
    } 
}

输出：

Algorithm: SHA1PRNG

示例2:

// 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 SecureRandom 
            SecureRandom sr = SecureRandom.getInstance("TAJMAHAL"); 
  
            // geting the Algorithm 
            // by using method getAlgorithm() 
            String algo = sr.getAlgorithm(); 
  
            // printing the string algo 
            System.out.println(algo); 
        } 
  
        catch (NoSuchAlgorithmException e) { 
  
            System.out.println("Exception thrown : " + e); 
        } 
    } 
}

输出：

Exception thrown : java.security.NoSuchAlgorithmException: TAJMAHAL SecureRandom not available

相关用法

注：本文由纯净天空筛选整理自RohitPrasad3大神的英文原创作品 SecureRandom 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。