Java 中的 SecureRandom getAlgorithm()方法，带示例

原文:https://www . geesforgeks . org/secureandom-getalgorithm-method-in-Java-with-examples/

Java . security . SecureRandom类的 getAlgorithm() 方法用于返回这个 secureandom 对象实现的算法的名称。 语法:

public String getAlgorithm()

返回值:该方法返回算法名称，如果无法确定算法名称，则返回未知。 以下是举例说明 getAlgorithm() 方法: 例 1:

Java 语言(一种计算机语言，尤用于创建网站)

// 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");

            // getting 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);
        }
    }
}

Output: 

Algorithm: SHA1PRNG

例 2:

Java 语言(一种计算机语言，尤用于创建网站)

// 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");

            // getting 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);
        }
    }
}

Output: 

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

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