Give four examples of how object-oriented programming helps with the development of large software projects and explain why each one is helpful. 

Explain the meaning of the Open-Closed principle

 Draw a UML diagram for a design satisfying the Open-Closed principle and explain why it satisfies it.

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Discuss the linked list data structure. What is it? How can it be used? An important aspect of a linked list is that you can easily visit each item of the list in order. This process is called traversal. In contrast, discuss what would be involved to traverse a stack or a queue data structure. What support exists for linked lists in the Java Class Library Collections Framework? Do you think this support is easy to under- stand and use? Why or why not? Discuss the pros and cons of creating your own linked list classes vs. using those pro- vided by the Java Class Library Collections Framework. Make sure you take into consid- eration the ability to handle any kind of ob- jects (generics). Discuss the linked list data structure. What is it? How can it be used? An important aspect of a linked list is that you can easily visit each item of the list in order. This process is called traversal. In contrast, discuss what would be involved to traverse a stack or a queue data structure. What support exists for linked lists in the Java Class Library Collections Framework? Do you think this support is easy to under- stand and use? Why or why not? Discuss the pros and cons of creating your own linked list classes vs. using those pro- vided by the Java Class Library Collections Framework. Make sure you take into consid- eration the ability to handle any kind of ob- jects (generics).