Java Signature getAlgorithm() method with Examples

The getAlgorithm() method of java.security.Signature class is used to return the name of the algorithm for this signature object.
Syntax:

public final String getAlgorithm()

Return Value: This method returns the name of the algorithm for this signature object.
Below are the examples to illustrate the getAlgorithm() method:
Example 1:

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 Signature
            Signature sr = Signature.getInstance("SHA1withDSA");

            // 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: SHA1withDSA

Example 2:

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 Signature
            Signature sr = Signature.getInstance("NONEwithDSA");

            // 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: NONEwithDSA