AlgorithmParameters getAlgorithm() method in Java with Examples

The getAlgorithm() method of java.security.AlgorithmParameters class is used to return the standard name of the algorithm this parameter generator is associated with.

Syntax:

public final String getAlgorithm()

Return Value: This method returns the string name of the algorithm.

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

Example 1: For Algorithm DSA

Java

// 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");

            // generating 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);
        }
    }
}

Output:

Algorithm: DSA

Example 2: For Algorithm DiffieHellman

Java

// 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");

            // generating 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);
        }
    }
}

Output:

Algorithm: DiffieHellman

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