difference between Scanner & BufferReader

Question

Possible Duplicate:
Scanner vs. BufferedReader

what is the difference between using the statements shown below:

Scanner input = new Scanner(System.in);
int number = input.nextInt();

and

InputStreamReader reader = new InputStreamReader(System.in);
BufferedReader input = new BufferedReader(reader);
int number = input.readLine();

thank you in advance for your help.

what is the correction !! should it be String instead of int. — Sinan, Mar 19 '12 at 10:21
You should have tried your code in an IDE before posting it here. It' doesn't even compile. — Perception, Mar 19 '12 at 10:23

score 1 · Answer 1 · answered Mar 19 '12 at 10:21

suppose in the consol, you entered

10 20

and then press ENTER key

The first case will return 10 but the second case will not compile, because readLine() returns String not int.

In case if you try to parse that returned String to int, then also it gives NumberFormatException, as it reads the complete line, which contains two numbers along with a WHITE SPACE

score 1 · Answer 2 · answered Mar 19 '12 at 10:22

1

The first compiles, the second not.

A scanner will parse the input to a datatype, the BufferedReader will give the data line by line as it is.

answered Mar 19 '12 at 10:22

Christian Kuetbach

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difference between Scanner & BufferReader

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