如何从扫描仪读取单个字符？

Question

I have a list of Characters and I want to add each character to the list as a user enters them (keyboard is a Scanner). I've tried two different approaches, neither works:

char temp = keyboard.nextByte();
charList.add(temp);

or

charList.add(keyboard.nextBye();

So how would I go about this?

Answer 1

If you want to just accept a char input

char temp keyboard.next().charAt(0);
charList.add(temp);

Always use the second, since you don't have any idea that user may enter String. Hence the second works for both.

Answer 2

us this Scanner reader = new Scanner(System.in);

char c = reader.nextChar();

You could take the first character from Scanner.next:

char c = reader.next().charAt(0);

To consume exactly one character you could use:

char c = reader.findInLine(".").charAt(0);

To consume strictly one character you could use:

char c = reader.next(".").charAt(0);