I've got the following method:

			

			public static boolean existeDispositivo(String nombreDispositivo)
			

			{
			

			Dispositivo dispositivo;
			

			Enumeration e = listaDispositivos.elements();
			

			

			while(e.hasMoreElements())
			

			{
			

			dispositivo = (Dispositivo)e.nextElement();
			

			if (nombreDispositivo == dispositivo.getNombre()) { return true;}
			

			}
			

			return false;
			

			}
			

		

where

			

			private static Vector listaDispositivos = new Vector();
			

		

"listaDispositivos" has objects "Dispositivo" in it. Dispositivos' constructor is:

			

			public Dispositivo(String nombreDispositivo)
			

			{
			

			

			try
			

			{
			

			nombre = nombreDispositivo;
			

			listaDispositivos.addElement(this);
			

			}
			

			catch(Exception e)
			

			{
			

			

			}
			

			}
			

		

and getNombre() method returns "nombre" variable from de corresponding "Dispositivo" instance. When I call this method with an existing Dispositivo, passing the parameter by value, like this:

			

			Dispositivo.existeDispositivo("sensor");
			

		

it works perfectly. The problem is that I receive this parameter from the keyboard, among others, and I put all them in a StringTokenizer object. Then I put nombreDispositivo in a String variable and call the method like this:

			

			Dispositivo.existeDispositivo(stringVariable);
			

		

and the method doesn't work, no matter if a "Dispositivo" with that "nombre" variable exists in the vector or not, it allways returns false. I must add that "nombre" uniquely identifies the "Dispositivo" instance. I wonder if anybody can help me or tell me what I am doing wrong. Thanks.    <<Less