Java Chapter 4: Constructors

What is the purpose of the Bicycle constructor?

To initialize the data members with default values

How many source files are used in the given example?

Two

What is the data type of the tagNo data member?

String

What is the initial value assigned to the ownerName data member?

Unknown Signup and view all the answers

What is the purpose of adding a new method to the Bicycle class?

To assign a tag number Signup and view all the answers

In which file is the Bicycle class definition stored?

Bicycle.java Signup and view all the answers

What is the purpose of the setTagNo method in the Bicycle class?

To set the tag number of the bicycle Signup and view all the answers

What is the default owner name when an Account object is created?

Unassigned Signup and view all the answers

What is the purpose of the add method in the Account class?

To add an amount to the account balance Signup and view all the answers

What does the getOwnerName method return in the Account class?

The owner's name of the account Signup and view all the answers

What is the purpose of the setInitialBalance method in the Account class?

To set the initial balance of the account Signup and view all the answers

What is the purpose of the deduct method in the Account class?

To deduct an amount from the account balance Signup and view all the answers

What is the name of the class that uses both the Bicycle and Account classes?

SecondMain Signup and view all the answers

What is the initial balance set to in the Account class?

250.00 Signup and view all the answers

What is the output of the code fragment acct.add(25.00); acct.deduct(50);?

225.00 Signup and view all the answers

What is the name of the method that adds an amount to the current balance?

add Signup and view all the answers

What is the purpose of the setOwnerName method?

To set the owner's name Signup and view all the answers

What is the purpose of a parameter in a method?

To hold the value of the passed argument Signup and view all the answers

What is the requirement for matching arguments and parameters?

The number of arguments and parameters must be the same Signup and view all the answers

What happens when an argument is passed to a method?

The value of the argument is passed into memory allocated for the parameter Signup and view all the answers

What is the restriction on the assignment of arguments to parameters?

Arguments can be assigned to parameters of a compatible data type Signup and view all the answers

What is the memory allocation process for the receiving method?

Separate memory space is allocated for the receiving method Signup and view all the answers

What happens to the literal constant in the example demo.compute(i, k, 20)?

It is passed as an argument to the method Signup and view all the answers

What happens when a class component is declared private?

Client classes cannot access it Signup and view all the answers

Why should data members be declared private?

Because they are implementation details of the class Signup and view all the answers

What is information hiding?

Hiding internal details of a class from clients Signup and view all the answers

When can constants be declared public?

When they are meant to be used directly by the outside class Signup and view all the answers

What is the effect of declaring a method private?

The method cannot be accessed from outside the class Signup and view all the answers

What is the purpose of declaring class components as public or private?

To control the accessibility of class components Signup and view all the answers