The getAttribute() method of java.security.Provider.Service class is used to return the value of attribute for the particular attribute name passed in this method.
Syntax:
public final String getAttribute(String name)
Return Value: This method returns value for the particular attribute type. Below are the examples to illustrate the getAttribute() method: Example 1:
Java
// Java program to demonstrate// getAttribute() 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 attribute of Provider.Service object // by using getAttribute() method String algo = service.getAttribute("KeySize"); // display the result System.out.println("KeySize is : " + algo); } catch (NoSuchAlgorithmException e) { System.out.println("Exception thrown : " + e); } catch (NoSuchProviderException e) { System.out.println("Exception thrown : " + e); } }} |
Output:
KeySize is : 1024
Example 2:
Java
// Java program to demonstrate// getAttribute() 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 attribute of Provider.Service object // by using getAttribute() method String algo = service.getAttribute("ImplementedIn"); // display the result System.out.println("ImplementedIn : " + algo); } catch (NoSuchAlgorithmException e) { System.out.println("Exception thrown : " + e); } }} |
Output:
ImplementedIn : Software
