SecureRandom getAlgorithm() method in Java with Examples

The getAlgorithm() method of java.security.SecureRandom class is used to return the name of the algorithm implemented by this SecureRandom object.

Syntax:

public String getAlgorithm()

Return Value: This method returns the name of the algorithm or unknown if the algorithm name cannot be determined.

Below are the examples to illustrate the getAlgorithm() method:

Example 1:



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// 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);
        }
    }
}

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Output:

Algorithm: SHA1PRNG

Example 2:

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// 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);
        }
    }
}

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Output:

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


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