How to display something untill i press button?

Asked Nov 01 '16 at 07:52

Active Nov 01 '16 at 07:54

Viewed 73 times

How to display output (W IS PRESSED) until i press w and when i release w then output will display as (W is released).

System.out.println("HI");
Scanner s = new Scanner(System.in);
String str = s.nextLine();
while(str.equals("w"))
{
    System.out.println("W IS PRESSED");
}

edited Nov 01 '16 at 07:54

einverne

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asked Nov 01 '16 at 07:52

Mark

Even with a scanner, I think you would need to press enter to complete the input of `w`. This sounds like the job for a keyboard listener. – Tim Biegeleisen Nov 01 '16 at 07:56
You can't do that with the `System.in` / `System.out` interface. You need to build a GUI interface to have that kind of insight into what is happening with the keyboard. Look into AWT/Swing for that. – Erwin Bolwidt Nov 01 '16 at 08:03
I thought event handlers like key listener is only available in GUI like Swing @TimBiegeleisen – Peter Gelderbloem Nov 01 '16 at 08:04
@PeterGelderbloem Yes, this is correct. – Tim Biegeleisen Nov 01 '16 at 08:04
Here's an example: https://docs.oracle.com/javase/tutorial/uiswing/events/keylistener.html – Erwin Bolwidt Nov 01 '16 at 08:05

How to display something untill i press button?

0 Answers0