Question

I have to read integers more frequently in Java. So how i should do? What function i have to use?

C/C++ too have buffering concepts but they has a single statement. But in Java we have to call at least 2 function to read an integer.

For an example,

To read an integer from console,

I will use

• scanf in C
• cin in C++

But in Java,

BufferedReader bufferedreader = new BufferedReader(
    new InputStreamReader(System.in)); String number = bufferedreader.readLine();

int value = Integer.parseInt(number);

or

Scanner scan = new Scanner(System.in); 
int i = scan.nextInt();

Someone please explain me: Can I have a simpler version than these similar to cin or scanf (A one line statement).

Thanks in advance.

Answer 1

I believe Scanner provides the simplest interface. I don’t believe there is a simpler approach provided by the standard API. (You could of course encapsulate the snippet in a method, and call the method instead.)

The only one-liner I can come up with is the obvious

int i = new Scanner(System.in).nextInt();