double length1, width1, area1, perimeter1;

        Scanner Sc = new Scanner(System.in); //Name of scanner
        System.out.println("Enter the Length of Rectangle");
        length1 = Sc.nextDouble();
        if (length1 >100) {
            System.out.println("Value can't be more than 100");
            System.out.println("Retype the Length of Rectangle");
            length1 = Sc.nextDouble();
        }