Software Engineering for Students A Programming Approach

218 Chapter 15 ■ Object-oriented programming
15.3 Suppose that you were asked to design a new programming language for software
engineering:
■ select and justify a mechanism for encapsulation
■ select and justify a mechanism for modularity.
15.4 Explain what the term modularity means. Assess how well the following features of
programming languages contribute to modularity:
■ methods
■ classes.
15.5 Assess the generics feature.
15.6 Argue for and against pointers in a programming language.
15.7 Argue for and against automatic garbage collection.
Answers to self-test questions
15.1 public void moveDown(int amount) {
}
y = y + amount;
15.2 public int yCoord {
}
get {
return y;
}
15.3 Methods: creditAccount, debitAccount, calculateInterest
Properties: currentBalance, name
15.4 class Stack {
}
private Arraylist s = new Arraylist();
public void push(String item) {
s.add(0, item);
}
public String pop() {
String item = (String) s.get(0);
s.remove(0);
return item;
}