Free Exam: APCS Ch. 9 Quiz
Number of Questions in Test: 19
Number of Questions in Preview: 5
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Which of the following is a [b]primary[/b] benefit of [b]inheritance[/b]?
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | Yes |
Question 2
One way of preventing a class from being inherited is to declare the class as:
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | Yes |
Question 3
You can specify only one superclass for any subclass you create ("single inheritance")
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | Yes |
Question 4
Which of the following is/are true regarding [b]abstract[/b] [b][i]methods[/i][/b]?
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |
Question 5
[b]Refer to the following partial class definitions for this question:[/b]
[b]public abstract class Account[/b]
{ public [b]Account[/b]() { ... }
}
[b]public class BankAccount extends Account[/b]
{ private double balance;
[b]public BankAccount (double amount)[/b]
{ super();
balance = amount;
}
}
[b]public class CheckingAccount extends BankAccount[/b]
{ private String customerName;
public [b]CheckingAccount [/b](String name, double amount)
{
[b][i]<Missing statements>[/i][/b]
}
...
}
Which of the following is an acceptable replacement for [b][i]<Missing statements>[/i][/b] in CheckingAccount's constructor?
I)[size=4] [/size][size=3] [/size]balance = amount;
customerName = name;
II)[size=4] [/size]super(amount);
customerName = name;
III)[size=4] [/size][size=4] [/size]super (name, amount);
[b]public abstract class Account[/b]
{ public [b]Account[/b]() { ... }
}
[b]public class BankAccount extends Account[/b]
{ private double balance;
[b]public BankAccount (double amount)[/b]
{ super();
balance = amount;
}
}
[b]public class CheckingAccount extends BankAccount[/b]
{ private String customerName;
public [b]CheckingAccount [/b](String name, double amount)
{
[b][i]<Missing statements>[/i][/b]
}
...
}
Which of the following is an acceptable replacement for [b][i]<Missing statements>[/i][/b] in CheckingAccount's constructor?
I)[size=4] [/size][size=3] [/size]balance = amount;
customerName = name;
II)[size=4] [/size]super(amount);
customerName = name;
III)[size=4] [/size][size=4] [/size]super (name, amount);
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |