XandY

Code

import java.util.Scanner;

public class XandY
{
    public static void main( String[] args )
    {
        Scanner keyboard = new Scanner(System.in);
        
        double x, y;
        
        
        
        System.out.println( " x       Y " );
        
        for ( x = -10 ; x <=10 ; x = x+.5 )
        {
            System.out.println ( x + "    " + ( y=x*x));
        }
    }
}

XandY