are a virtual thing, which get characteristics in a program.

Example

When you make an inventory program for someone who sells tables and chairs, the simplest way is to bring everything under in a category, like furniture.

package InventorySystem;

public class Furniture {

}

picture

To get an overview of my collection, I order my objects in categories. Every category will also be a new object.

package InventorySystem;

public class MyCollection {
		
}

You see 5 objects in the picture, however, in Java we will have 7 objects. Because the categories (tableCollection and chairCollection) are also objects.

We will work out this example in the next lesson when we order everything.

WHY USE OBJECTS?

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