java - Limit number of prompted arguments -

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i want prompt user input 2 numbers represent size nxn of board. if user write less 1 or more 2 numbers, program don't allow him , instead, handle exception.

for example:

public class tester {  public static void main(string[] args) {      scanner userinput = new scanner(system.in);      system.out.print("board size nxn: ");      int width = userinput.nextint();     int height = userinput.nextint(); } }

how can achieve using try-catch block limiting user input 2 numbers?

public class tester {

public static void main(string[] args) {      scanner userinput = new scanner(system.in);      system.out.print("board size nxn: ");     try {         int width = userinput.nextint();         int height = userinput.nextint();         if (userinput.hasnext()) {             throw new illegalargumentexception();         }     } catch (illegalargumentexception e) {         system.err.println("enter 2 numbers");     } }

}


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