Java - Reading integer value after space

Question

I am trying to read Integer value after I hit space but using scanner it only works after I press Enter. How can I make it read the integers after the white space?

This is my code:

for (i = 0; i< n; i++) {
    scanner = new Scanner(System.in);
    list.add(scanner.nextInt());
}

It depends upon your terminal, not Java: the terminal may not even send the keystrokes to the program until you press enter. — Andy Turner, Oct 19 '17 at 21:50
Is there another way to read the characters that would allow me to do that? — Marcos Guimaraes, Oct 19 '17 at 21:51
You can also read your input as a String and then split and cast to numbers. — Juan Carlos Mendoza, Oct 19 '17 at 21:55
You can do this if n represents the known number of values you want to scan for. The problem is that you are assigning a new scanner inside the loop. Try assigning it before the loop. — tune5ths, Oct 19 '17 at 21:59

score 0 · Answer 1 · answered Oct 19 '17 at 21:50

0

You cannot, it works that way System.in works that way, that buffer is flushed only upon pressing enter.

answered Oct 19 '17 at 21:50

Antoniossss

24,977
3
43
86

Thanks for the reply. Is there another way to read the characters that would allow me to do that? – Marcos Guimaraes Oct 19 '17 at 21:51
Not within pure java. – Antoniossss Oct 19 '17 at 21:55

Java - Reading integer value after space

1 Answers1