java - How can I check if something has written in consol input? -

how can check if has written in console input? if isn't code go on if write new happens? possible?

scanner k2sk; k2sk = new scanner(system.in); k2sk.nextline(); 

but code waits until write something

if want wait user input, , @ same time don't wish wait it, assign duty thread.

here have done short example, hope useful:

import java.util.scanner; public class testinput {      public static void main(string[] aa)     {          new thread(new t1()).start();          system.out.println("moved further");     }      public static class t1 implements runnable     {          public void run() {              scanner k2sk;             k2sk = new scanner(system.in);             k2sk.nextline();             system.out.println("done");         }     } }