Replacing Host Name and Port number throughout Environments

Question

So I am currently working on a project that have several classes using simple JDBC code. I'm switching all of it to use JNDI instead of what is currently being used. I'm using Weblogic and the plan is to have the code run in a cluster.
Here is a code Snippet of some of the code.
Context ctx = null;
Hashtable ht = new Hashtable();
ht.put(Context.INITIAL_CONTEXT_FACTORY,
"weblogic.jndi.WLInitialContextFactory");
ht.put(Context.PROVIDER_URL,
"t3://hostname:port");
My problem lies in the the "t3://hostname:port" String. I don't want to hardcode that since I know its bad code practice but my question is what is the best way to replace that with the Host Name and Port number as I move environments. Should I have a Class with a Static Variable and just reference that through the other classes or should I put it in some Property file and read the value from there? Any insight into this would be greatly appreciated.
Thank you.

Answer 1

would it be something like this?
Properties properties = new Properties();
          try {
     properties.load(new FileInputStream("src/jndi.properties"));
     String url = properties.getProperty("url");
     System.out.println(url );
     } catch (IOException e) {
     }