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Java Signature getAlgorithm() method with Examples

  • Last Updated : 06 Jun, 2021

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

 

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