How would you write java script code that will prompt a user to enter a number between 1 and 10 and give an error message if its not and continue to prompt them until the proper value is received?

Answer 1

For this, I'll just go ahead and write a sample program:

(assume all necessary imports are present)

public class prompter{

public static void main(String[] args){

Scanner kb = new Scanner (System.in);

int inputValue = 0;

System.out.println("Enter a value between 1 and 10:");

String input = kb.nextLine();

try{ inputValue = Integer.parseInt(input); } catch( Exception e) {}

while( inputValue < 1 inputValue > 10 ){

System.out.println("Invalid value.\nPlease enter a value between 1 and 10:");

input = kb.nextLine();

inputValue = Integer.parseInt(input);

}

/* enter whatever code you want here - inputValue will contain an inputted integer between 1 and 10*/

}

}

This sample program uses Scanner objects to detect user input, and uses the Integer class's parseInt() method to interpret that input, using a try/catch statement to first make sure that the input is in fact an integer.