Answer these questions:

a) How does a software engineer use design patterns ?

b) When do you apply the Strategy pattern ?

c) The TitledBorder class can give a title to a border. Consider the code

panel.setBorder(new TitledBorder(new BevelBorder(BevelBorder.RAISED), "Confirm Selection"));

What design pattern(s) are at work? Explain your answer. (a similar example is in the textbook/notes)