The getAlgorithm() method of java.security.Provider.Service class is used to return the standard name of the algorithm this Provider.Service is associated with.
Syntax:
public final String getAlgorithm()
Return Value: This method returns name of the algorithm.
Below are the examples to illustrate the getAlgorithm() method:
Example 1:
Java
// Java program to demonstrate// getAlgorithm() methodimport 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", "SUN"); // getting the Provider of the Signature sr // by using method getProvider() Provider provider = sr.getProvider(); // getting the service of the provider // using getServices() method Provider.Service service = provider .getService("Signature", sr.getAlgorithm()); // getting algorithm of Provider.Service object // by using getAlgorithm() method String algo = service.getAlgorithm(); // display the result System.out.println("Algorithm : " + algo); } catch (NoSuchAlgorithmException e) { System.out.println("Exception thrown : " + e); } catch (NoSuchProviderException e) { System.out.println("Exception thrown : " + e); } }} |
Output:
Algorithm : SHA1withDSA
Example 2:
Java
// Java program to demonstrate// getAlgorithm() methodimport java.security.*;import java.util.*;public class GFG1 { public static void main(String[] argv) { try { // creating object of MessageDigest MessageDigest msd = MessageDigest.getInstance("MD5"); // getting the Provider of the Signature sr // by using method getProvider() Provider provider = msd.getProvider(); // getting the service of the provider // using getServices() method Provider.Service service = provider .getService("MessageDigest", msd.getAlgorithm()); // getting algorithm of Provider.Service object // by using getAlgorithm() method String algo = service.getAlgorithm(); // display the result System.out.println("Algorithm : " + algo); } catch (NoSuchAlgorithmException e) { System.out.println("Exception thrown : " + e); } }} |
Output:
Algorithm : MD5
Reference: https://docs.oracle.com/javase/9/docs/api/java/security/Provider.Service.html#getAlgorithm–
