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Timothy Hilley
2,292 PointsScanner... x.x
This whole scanner block of code that he just typed went right over my head.
Scanner scanner = new Scanner(System.in) for starters., ClassScanner is instantiating scanner to be the link to all the methods found in System.in Class Scanner?
2 Answers
Anders Björkland
7,481 PointsI will give this a shot. A Scanner is a type of object that can read a string of characters from a stream. A stream can be a string of characters from for example a text document or, as in this case, your keyboard. but how would the Scanner object know where to look? Well, you tell it in its constructor: Scanner scanner = new Scanner(System.in);
OK, so you told the Scanner object that its reading material is in System.in. So what is that? The .in shows us that we are accessing a public field (a variable) of the System class. What kind of field? Well, a stream. An InputStream. An InputStream that so happens to be connected to the keyboard.
So what you have now is an object that can read input from your keyboard by calling its methods next(), nextLine(), etc.
Timothy Hilley
2,292 Pointsit clicked when you pieced together System.in to keyboard. thanks a lot!!