BoxDemo2.java

package chapter6;

//This program declares two box objects
public class BoxDemo2 {
    public static void main(String[] args) {
        Box myBox1 = new Box();
        Box myBox2 = new Box();
        double vol;

        //assign values to mybox1's instance variables
        myBox1.width = 10;
        myBox1.height = 20;
        myBox1.depth = 15;

        //assign values to mybox2's instance variables
        myBox2.width = 3;
        myBox2.height = 6;
        myBox2.depth = 9;

        //compute the volume of first box
        vol = myBox1.width * myBox1.height * myBox1.depth;
        System.out.println("Volume is vol "+vol);

        //compute the volume of second box
        vol = myBox2.width * myBox2.height * myBox2.depth;
        System.out.println("Volume is vol "+vol);


    }
}