You review a design written by somebody else for an application and you find these: - an interface Shape with a method draw() - a class Circle that implements Shape - a class Rectangle that implements Shape - a class CompoundShape that: o implements interface Shape o aggregates 0 or more Shape objects, o has an extra method called add(Shape sh) o for implementing method draw() calls the draw() method for all aggregated Shape objects. You assume that a CompoundShape object is made of multiple shapes. What design pattern is at work in this application? Explain your answer.
Answers
This is the Composite pattern, one of the "Gang-of-Four" design patterns (check out their book!).
Related Questions
How long can a black box survive underwater
Answers
They work to a depth of just over four kilometres, and can "ping" once a second for 30 days before the battery runs out, meaning MH370's black box stopped pinging around April 7, 2014. After Air France flight 447 crashed into the Atlantic Ocean, it took search teams two years to find and raise the black boxes.
The headings that appear on the Ribbon, such as File, Home, and Insert, are called:
shortcuts
groups
menus
tabs
Answers
Final answer:
The headings on the Ribbon such as File, Home, and Insert are called tabs.
Explanation:
The headings that appear on the Ribbon, such as File, Home, and Insert, are called tabs. The Ribbon interface in Microsoft Office programs uses a system of tabs to organize commands in a way that helps users quickly find what they need. Within each tab, commands are further organized into groups. For instance, the Home tab is divided into several groups like Clipboard, Font, and Paragraph, which contain related functionality. The Insert tab includes groups for adding various objects to your document, like Tables, Illustrations, and Links.