Configuration File: named config.txt

title=My Favorite Playground
bkcolor=0000FF
textcolor=AAAA00

Java Code

import java.awt.*;
import javax.swing.*;
import java.io.*;
import java.net.*;
public class ConfigFile extends JApplet
{
	JPanel bkgrnd;
	JLabel heading;
	Color backcolor, textcolor;
	String titletext;
	String configFilename = "config.txt";	
	public void init( )
	{
		String config = readConfigFile( );
		parseConfig( config );
		bkgrnd = new JPanel( );
		bkgrnd.setBackground( backcolor );
		heading = new JLabel( titletext );
		heading.setForeground( textcolor );
		bkgrnd.add( heading );
		setLayout( new BorderLayout( ) );
		add( bkgrnd, BorderLayout.CENTER );
	}
	public void parseConfig( String cfg )
	{
		String[ ] lines, tokenkey;
		lines = cfg.split( "\n" );
		for( int i=0; i < lines.length; i++ )
		{
			tokenkey = lines[i].split( "=" ); 
				// remove newline at end
			String value = tokenkey[1].substring( 0, tokenkey[1].length( ) -1 );     
			if ( tokenkey[0].equals( "bkcolor" ) )
				backcolor = new Color( Integer.parseInt( value, 16 ) );
			else if ( tokenkey[0].equals( "textcolor" ) )
				textcolor = new Color( Integer.parseInt( value, 16 ) );
			else if ( tokenkey[0].equals( "title" ) )
				titletext = value;
		}
  }
  public String readConfigFile( )
  {    String content;
	   try {
      	     URL target = new URL( getCodeBase( ), configFilename );
	     URLConnection con = target.openConnection( );
	     con.connect( );
	     byte b[ ] = new byte[ 1024 ];            // byte array
	     int nbytes;                 		 // num bytes read in
	     String retVal = new String( );
      	     BufferedInputStream in = new BufferedInputStream( con.getInputStream( ), 2048 );  
		   while( (nbytes = in.read( b, 0, 1024 )) != -1 )  // while there's more to read
		   {     content = new String( b, 0, nbytes );       // get 1024 bytes of data 
		         retVal += content;
		   }   
		   in.close( );        // close connection
		   return retVal;
	  } catch ( Exception e )	{  return "Error reading config file";   }
  }
}