How do I find out what keystore my JVM is using?

To find out which keystore the Java Virtual Machine (JVM) is using, you can use the javax.net.ssl.KeyManagerFactory class and the getDefaultAlgorithm method.

Here's an example of how you can use these classes to find out which keystore the JVM is using:

import javax.net.ssl.KeyManagerFactory;

public class KeystoreUtils {
  public static void main(String[] args) {
    String keystoreType = KeyManagerFactory.getDefaultAlgorithm();
    System.out.println("Keystore type: " + keystoreType);
  }
}

This code will print the keystore type that the JVM is using to the console.

On most systems, the JVM will use the "PKCS12" keystore type by default, which corresponds to the .p12 file format. However, other keystore types, such as "JKS" (Java KeyStore) and "Windows-MY" (Windows certificate store), are also supported.

You can also use the -Djavax.net.ssl.keyStore and -Djavax.net.ssl.keyStoreType system properties to specify the location and type of the keystore that you want the JVM to use.

For example, you can start the JVM with the following options to use a JKS keystore located at /path/to/keystore.jks:

java -Djavax.net.ssl.keyStore=/path/to/keystore.jks -Djavax.net.ssl.keyStoreType=JKS ...

I hope this helps! Let me know if you have any questions.