Strange behaviour of Scanner class

Asked May 14 '14 at 17:06

Active May 14 '14 at 17:06

Viewed 27 times

Why does Scanner behave in such a strange way?

When ever I take input for an integer followed by string ,it never takes it?

like for example

Scanner s=new Scanner(System.in);
int i=s.nextInt();
String str=s.nextLine();
String str2=s.nextLine();

We can never input a value for a string str,it straightways go to str2?why so?

asked May 14 '14 at 17:06

user3590092

How are you separating the fields? Newline? The newline isn't part of the integer. So you then get an "empty line". – Elliott Frisch May 14 '14 at 17:08
Have you tried using s.next() instead of nextLine()? – Narble May 14 '14 at 17:10
Have you read the documentation of `Scanner#nextLine`? – Luiggi Mendoza May 14 '14 at 17:11
nextInt() reads an integer, but it stays on the current line. The first nextLine() method returns the rest of the current line (excluding the line separator) and advances to the next line. The second nextLine() retrieves your String. – Edwin Torres May 14 '14 at 17:59

0 Answers0