[Hilfe] Programmierung OnlineMode-Erkennung immer "true"?

public class BuyMinecraft extends Thread {

	public static final String CONFIG_FILE = "server.properties";
	public boolean onlineMode;

public void onlinemode()
{
	System.out.println("Erkenne Online-Mode");	
	try {
		Properties props = new Properties();
		props.load(new FileReader(CONFIG_FILE));
		onlineMode = props.getProperty("online-mode", "false") != null;
	} catch (IOException ex) {
	System.err.println("No server.properties file detected.");
}
	if(!onlineMode)
	{
	System.out.println("Server is running in online-mode="+onlineMode+"! Change this!");	
	System.exit( -1 );
	}
	if(onlineMode)
	{
	System.out.println("Server is running in online-mode="+onlineMode+"!");	
	}
	System.out.println("Erkenne Online-Mode abgeschlossen");
}
}