Question

how can I place my mysql database url, username and password in a file and how can I access them to use in my java code instead of hard coding them. I’ve tried google but am not getting clear direction

Answer 1

Create a properties file. You can load it by the Properties API.

E.g. config.properties:

url = jdbc:mysql://localhost:3306/dbname
username = foo
password = bar

Then you can load and read it as follows (after you’ve placed it in the classpath):

Properties config = new Properties();
config.load(Thread.currentThread().getContextClassLoader().getResourceAsStream("config.properties"));

String url = config.getProperty("url");
String username = config.getProperty("username");
String password = config.getProperty("password");
// ...