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  public class Config {
     private static java.util.Properties prop = new java.util.Properties();
     private static loadProperties() {
          // get class loader
          ClassLoader loader = Config.class.getClassLoader();
          if(loader==null)
	    loader = ClassLoader.getSystemClassLoader();

          // assuming you want to load application.properties located in WEB-INF/classes/conf/
          String propFile = "conf/application.properties";
          java.net.URL url = loader.getResource(propFile);
	  try{prop.load(url.openStream());}catch(Exception e){Syste,.err.println("Could not load configuration file: " + propFile);}
     }

     //....
     // add your methods here. prop is filled with the content of conf/application.properties

     // load the properties when class is accessed
     static {
        loadProperties();
     }
  }