question: public static void saveToProtectedStore ( PrivateKey privateKey , Certificate certificate , File storeLocation , String alias , String privateKeyPassword , String keyStorePassword , String keyStoreType ) throws IOException , KeyStoreException , NoSuchProviderException , NoSuchAlgorithmException , CertificateException { KeyStore store = null ; if ( keyStoreType . equals ( "PKCS12" ) ) { store = KeyStore . getInstance ( keyStoreType , CryptoUtil . getSecurityProviderName ( KeyStore . class ) ) ; } else store = KeyStore . getInstance ( keyStoreType ) ; store . load ( null , null ) ; Certificate [ ] chain = new Certificate [ 1 ] ; chain [ 0 ] = certificate ; if ( privateKeyPassword != null ) store . setKeyEntry ( alias , privateKey , privateKeyPassword . toCharArray ( ) , chain ) ; else store . setKeyEntry ( alias , privateKey , null , chain ) ; FileOutputStream fOut = new FileOutputStream ( storeLocation ) ; try { store . store ( fOut , keyStorePassword == null ? null : keyStorePassword . toCharArray ( ) ) ; } finally { fOut . close ( ) ; } }
target:  Save the private key to a jks or pfx (PKCS12)-keystore.