Null pointer when connecting to database

Question

I am trying to connect to a database with phpMyadmin but I get an nullpointer in properties

Here is my code:

public Connection getConnection() throws SQLException {
        final String ip = prop.getProperty("database_ip");
        final String dir = prop.getProperty("database_dir");
        final String username = prop.getProperty("database_username");
        final String password = prop.getProperty("database_password");

        try {
            Class.forName("com.mysql.jdbc.Driver");
        } catch (ClassNotFoundException e) {
            throw new IllegalStateException("No suitable driver found");
        }
        return DriverManager.getConnection("jdbc:mysql://" + ip + "/" + dir, username, password);
    }

and here is where the nullpointer happens:

private Properties getPropertyFile(String path) {
        Properties prop = new Properties();
        try {
            prop.load(getClass().getClassLoader().getResourceAsStream(path));
        } catch (IOException e) {
            e.printStackTrace();
        }
        return prop;
    }

and here is my map structure: