protected boolean hasMoreProduct(){
		try{
			do{
				nextLine = source.readLine();	
				//System.out.println(nextLine!=null);
				//System.out.println(nextLine.length()== 0);
				if (nextLine==null){
					break;
				}
			}while(nextLine.length()== 0);
			//System.out.println(nextLine);
		}
	    catch (IOException e) {
		    System.err.println("Error: " + e);
		}
		return nextLine!=null;
	}