Need this info... thank you!

1. How does object-oriented programming promote code reuse?

For this, i normally use Eclipse to create a java project.

2. Using the programming language of your choice, create a class for Triangle objects. This Triangle class should inherit from a Shape class and implement its own getArea() and getPerimeter() methods.Include a constructor that expects three double values for a triangles sides. Create a program to test your Triangle class, and include a method that takes a Shape object as a parameter. Pass a Triangle object to this method to display the data.

Hint: To find a triangles area, use the following formula (given three sides):

public double getArea(){

double s = (side1 + side2 + side3)/2;

return Math.sqrt(s * (s-side1) * (s-side2) * (s-side3));

}

Thank you so much!!!