KeyStore getProvider() method in Java with Examples - GeeksforGeeks

09 Jun, 2020
The getProvider() method of java.security.KeyStore class is used to get the Provider associated with this KeyStore instance.
Syntax:
public final Provider getProvider()
Parameter: This method accepts nothing as a parameter.
Return Value: This method returns the Provider associated with this KeyStore.
Note: All the programs in this article won’t run on online IDE as no ‘privatekey’ Keystore exists. You can check this code on Java compiler on your system. To check this code, create a Keystore ‘privatekey’ on your system and set your own Keystore password to access that Keystore.
Below are the examples to illustrate the getProvider() method:
Example 1:
// Java program to demonstrate getCertificate() method  import java.security.*;import java.security.cert.*;import java.util.*;import java.io.*;  public class GFG {    public static void main(String[] argv)    {        try {              // creating the object of KeyStore            // and getting instance            // By using getInstance() method            KeyStore sr = KeyStore.getInstance("JKS");              // keystore password is required to access keystore            char[] pass = ("123456").toCharArray();              // creating and initializing object of InputStream            InputStream is                = new FileInputStream(                    "f:/java/private key.store");              // initializing keystore object            sr.load(is, pass);              // getting the certificate            // using getCertificate() method            Provider provider = sr.getProvider();              // display the result            System.out.println("Provider : "                               + provider);        }          catch (NoSuchAlgorithmException e) {              System.out.println("Exception thrown : " + e);        }        catch (NullPointerException e) {              System.out.println("Exception thrown : " + e);        }        catch (KeyStoreException e) {              System.out.println("Exception thrown : " + e);        }        catch (FileNotFoundException e) {              System.out.println("Exception thrown : " + e);        }        catch (IOException e) {              System.out.println("Exception thrown : " + e);        }        catch (CertificateException e) {              System.out.println("Exception thrown : " + e);        }    }}
Example 2: For Without Loading keystore
// Java program to demonstrate getCertificate() method  import java.security.*;import java.security.cert.*;import java.util.*;import java.io.*;  public class GFG {    public static void main(String[] argv)    {        try {              // creating the object of KeyStore            // and getting instance            // By using getInstance() method            KeyStore sr = KeyStore.getInstance("JKS");              // keystore password is required to access keystore            char[] pass = ("123456").toCharArray();              // creating and initializing object of InputStream            InputStream is                = new FileInputStream(                    "f:/java/private key.store");              // getting the certificate            // using getCertificate() method            Provider provider = sr.getProvider();              // display the result            System.out.println("Provider : "                               + provider);        }        catch (NullPointerException e) {              System.out.println("Exception thrown : " + e);        }        catch (KeyStoreException e) {              System.out.println("Exception thrown : " + e);        }        catch (FileNotFoundException e) {              System.out.println("Exception thrown : " + e);        }    }}
Reference: https://docs.oracle.com/javase/9/docs/api/java/security/KeyStore.html#getProvider–
shubham_singh
Akanksha_Rai
Java-Functions
Java-KeyStore
Java-security package
Java
Java
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