The getProvider() method of java.security.Provider.Service class is used to return the provider of this provider service object.
Syntax:
public final Provider getProvider()
Return Value: This method returns the provider of this provider service object.
Below are the examples to illustrate the getProvider() method:
Example 1:
// Java program to demonstrate// getProvider() 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", "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 Provider of Provider.Service object // by using getProvider() method Provider name = service.getProvider(); // display the result System.out.println("Provider : " + name); } catch (NoSuchAlgorithmException e) { System.out.println("Exception thrown : " + e); } catch (NoSuchProviderException e) { System.out.println("Exception thrown : " + e); } }} |
Output:
Provider : SUN version 1.8
Example 2:
// Java program to demonstrate// getProvider() method import 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 Provider of Provider.Service object // by using getProvider() method Provider name = service.getProvider(); // display the result System.out.println("Provider : " + name); } catch (NoSuchAlgorithmException e) { System.out.println("Exception thrown : " + e); } }} |
Output:
Provider : SUN version 1.8
Reference: https://docs.oracle.com/javase/9/docs/api/java/security/Provider.Service.html#getProvider–