How to load a config file at appliaction startup

Question

Hi
Is there a way to load a config file at application startup?
I have the DB conection info in a config file.
Right now m accessing that info by loading it using a classloader n then parsing it.
When ever i access the DB this file is loaded n parsed.
I want it to be loaded only once at startup n get cached.
Then later on whenever i refer it, i shud get the cached copy.
Is there a way to do this?

Answer 1

Or you could just include a relevant static block.
For instance you could have a utility class for accessing your DB in which you wrap jdbc code for querying, updating etc. This class would have code like the following:
public class DBBean {
   private static DataSource ds = null;
   static {
      loadDataSource();
   public static loadDataSource() {
      // load your property file with the configuration info and setup your datasource
   public static void doSomething() {
      Connection con = ds.getConnection();
}By placing initialization code in a public (?) method you can call this method to re-initialize your DataSource if e.g. you updated your datasource settings.
Hope this helps