public class And extends Porte2Entrees{
      /*void run(){
  	s=in1 && in2;
      }
      void display(){
      }*/
      /*public boolean getEtat() throws NonConnecteException {
  	if ((in1 == null) || (in2 == null)) {			
  	    throw new NonConnecteException();		
  	} else {
  	    s=(in1.getEtat() && in2.getEtat());
  	    return s;		
  	}		
      }*/
  
      public boolean eval()throws NonConnecteException {
  	return (in1.getEtat() && in2.getEtat());			
      }
  }