Standard Java Keystore

// put your keystore file address here
String fileAddress = "C:\\Program Files\\Java\\jre1.8.0_301\\lib\\security\\cacerts"
try(InputStream keyStoreData = new FileInputStream(fileAddress)) {
  KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
  char[] keyStorePassword = "changeit".toCharArray(); // the default password for default keystore
  keystore.load(keyStoreData, keyStorePassword);
  
  // ...
}
catch (Exception e) {
  e.printStackTrace();
}
Hugh Jass