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() 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 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() 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 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–