PPT Slide

Using Objects: Creating a Box

class BoxesExample {

public static void main (String[ ] argv) {

Box shoeBox;

shoeBox = new Box( );

shoeBox.setLength(35);

shoeBox.setWidth(19);

shoeBox.setHeight(13);

Box cdBox = new Box( );

cdBox.setLength(14);

cdBox.setWidth(9);

cdBox.setHeight(1);

int iTotalVolumeOfBoxes;

iTotalVolumeOfBoxes =

shoeBox.getVolume()

+ cdBox.getVolume();

System.out.println

(“The combined volume of the boxes”);

System.out.println

(“is: “, iTotalVolumeOfBoxes);

} // of main

} // of class BoxesExampleProgram

First, we declare

a variable

called ‘shoeBox.’

At this point, shoeBox

is merely a null

reference.

Second, we

instantiate shoeBox.

Values are assigned.

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