Loading TrustStore and KeyStore from InputStream

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public class TrustLoader {
    
    public static void main(String args[]) {
        try {
                //Gets the inputstream of a a trust store file under ssl/rpgrenadesClient.jks
                //This path refers to the ssl folder in the jar file, in a jar file in the same directory
                //as this jar file, or a different directory in the same directory as the jar file
                InputStream stream = TrustLoader.class.getResourceAsStream("/ssl/rpgrenadesClient.jks");
                //Both trustStores and keyStores are represented by the KeyStore object
                KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType());
                //The password for the trustStore
                char[] trustStorePassword = "password".toCharArray();
                //This loads the trust store into the object
                trustStore.load(stream, trustStorePassword);
                
                //This is defining the SSLContext so the trust store will be used
                //Getting default SSLContext to edit.
                SSLContext context = SSLContext.getInstance("SSL");
                //TrustMangers hold trust stores, more than one can be added
                TrustManagerFactory factory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
                //Adds the truststore to the factory
                factory.init(trustStore);
                //This is passed to the SSLContext init method
                TrustManager[] managers = factory.getTrustManagers();
                context.init(null, managers, null);
                //Sets our new SSLContext to be used.
                SSLContext.setDefault(context);
            } catch (KeyStoreException | IOException | NoSuchAlgorithmException 
                    | CertificateException | KeyManagementException ex) {
                //Handle error
                ex.printStackTrace();
            }
        
    }
}

Intiating a KeyStore works the same, except replace any word Trust in a object name with Key. Additionally, the KeyManager[] array must be passed to the the first argument of SSLContext.init. That is SSLContext.init(keyMangers, trustMangers, null)

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