Java
TOPIC 36 – CONSTRUCTORS
AP EXTRA

AP LESSON WORK

QUESTION 1

Create a class that will define Book objects. The data fields are:

· String title

· String author

· int year

Create a constructor that gets a value for each of the data fields.

Finally, in a BookTester class, create three different books of your choice. For example, you could create On The Origin of Species by Charles Darwin (1859).

QUESTION 2

Create a class called Triangle. Its data fields are three Point objects. To do this, you will have to create a Point class (or copy one from another lesson).

You are to include a constructor that gets an object for each of the data fields.

Inside a main method, create three Point objects. Then use those Point objects to create a Triangle object.

Output the coordinates of the points inside the Triangle object.

Extra – After doing everything above, try changing on of your Point objects. Now output your Triangle object's coordinates. This is a concern that we will have to deal with in the future.