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 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"); 
  
            // 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); 
        } 
    } 
} 

Output:

Algorithm: SHA1withDSA

Example 2:

// 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"); 
  
            // 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); 
        } 
    } 
} 

Output:

Algorithm: NONEwithDSA

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