Configuration Properties

Hi,
I have a Configuration Properties file that contains (variable, value) pairs. I would like to read those pairs from the file and use them to do database connection. Can someone show me a model

==== e.g Content of the file =======
password mypass
username myusername

============= in Addition ==========
i know how i can load the file content, but not how i pick a pair from it.

 // Read properties file.
    Properties properties = new Properties();
    try {
        properties.load(new FileInputStream("filename.properties"));
    } catch (IOException e) {
    }
   
 
komlaaaAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

ADSLMarkCommented:
You mean:

import java.io.*;
import java.util.*;

public class Example
{
    public static void main(String[] args)
    {
        Properties properties = new Properties();

        try
        {
            properties.load(new FileInputStream("config.txt"));
            System.out.println(properties.getProperty("username"));
            System.out.println(properties.getProperty("password"));
        }
        catch (IOException ioe)
        {
            System.err.println(ioe);
        }
    }
}

Simply use getProperty(String). Check http://java.sun.com/j2se/1.5.0/docs/api/java/util/Properties.html for more available methods.

Mark
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Mayank SAssociate Director - Product EngineeringCommented:
>>  but not how i pick a pair from it.

Use getProperty () as Mark has shown. Also close the file input stream in a finally block:

>> properties.load(new FileInputStream("filename.properties"));

FileInputStream fis = null ;
try
{
  fis = new FileInputStream ( "filename.properties" ) ;
  properties.load ( fis ) ;
} catch ( Exception e ) { e.printStackTrace () ; }
finally
{
  if ( fis != null )
    fis.close () ;
}
0
Mayank SAssociate Director - Product EngineeringCommented:
One of the best places to look for examples is Example depot:

http://www.exampledepot.com/egs/java.util/Props.html
0
komlaaaAuthor Commented:
0
Mayank SAssociate Director - Product EngineeringCommented:
Yes but that's only for the environmental properties. You can use the code posted above for any general properties file.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Java

From novice to tech pro — start learning today.