TestBox.java

package proj27012023;

public class TestBox {
    public static void main(String[] args) {
        Box b1 = new Box(5, 7, 12);

        b1.setLength(10.0);
        System.out.println("Volume=" + b1.getVolume());
        System.out.println(b1);

        double v = b1.getVolume();
        double l = Math.pow(v, 1.0 / 3.0);

        Box b2 = new Box(l, l, l);
        System.out.println(b1.getVolume());
        System.out.println(b2.getVolume());

        if (Math.abs(b1.getVolume() - b2.getVolume()) < 0.000001)
            System.out.println("OK");
        else {
            System.out.println("Error");
        }

    }

}