从文件中读取问题

Question

I am getting a NoSuchElementException when I am trying to read info from a file to create an object. Can anyone help me see what is going wrong?

else if(response == 3){
    System.out.println("Enter the name of the file to load items from: ");
    loadFile = input.nextLine();
    try {
        infile = new Scanner(new FileReader(loadFile+".txt"));
    }
    catch(IOException err) {
        infile = null;
        System.out.println("Cannot open file\n");
    }
    while(infile.hasNext()){
        itemType = infile.next();
        name = infile.next();
        itemDescription = infile.next();
        itemCalories = infile.nextInt();
        itemPrice = infile.nextDouble();
        itemSpecific = infile.nextLine();
        createNewObject(counter, itemType, name, itemDescription, itemCalories, itemPrice, itemSpecific);
    }
}

My file 'items' is arranged as so:

Doughnut                                  
Jellydoughnut                        
Roundwithfrosting                             
100                                  
1.22                                  
creamfilling

Answer 1

You're checking hasNext() just once, and then getting a bunch of tokens without checking. That's dangerous. Each nextXXX() should be preceded by a hasNextXXX() .