Manejar PROPERTIES con SINGLETON

import java.util.ResourceBundle;

public abstract class MyProperties {

private static ResourceBundle myResources;

public static String getProperty(String key){

if(myResources==null){

myResources = ResourceBundle.getBundle("hola");

}

return myResources.getString(key);

}

public static void main(String[] args){

System.out.println(MyProperties.getProperty("titulo"));

}

}