BoxDemo.java

/* 1. Complete the following a program in Java to create a class Box with instance variables length,
width, and height. Create at least 2 objects from the class Box and calculate volume of each box
object. */

// this class declares an object of type box
class Box{
    int length;
    int width;
    int height;
}

public class BoxDemo {
    public static void main(String[] args) {
        Box box1=new Box();
        Box box2=new Box();
        double vol1,vol2;

        //assign values of box instance variables
        box1.length=6;
        box1.height=7;
        box1.width =8;

        box2.length=12;
        box2.width =43;
        box2.height=3;

        // compute volume
        vol1= box1.length*box1.width *box1.height;
        vol2= box2.length*box2.width *box2.height;

        System.out.println("Volume of box1 is : "+vol1);
        System.out.println("Volume of box2 is : "+vol2);
    }
}