A) Describe what this class represents and what it does: B) What methods make up
ID: 3903391 • Letter: A
Question
A) Describe what this class represents and what it does:
B) What methods make up the class’s public interface?
public class MyClass
{
private String firstName;
private String lastName;
private int idNumber;
private double balance;
public MyClass()
{
this.firstName = "";
this.lastName = "";
this.idNumber = -1;
this.balance = 0.0;
}
public MyClass(String firstName, String lastName, int id)
{
this.firstName = firstName;
this.lastName = lastName;
this.idNumber = id;
this.balance = 0.0;
}
public void makeDeposit(int id, double amount)
{
if(this.confirm(id))
{
this.balance += amount;
}
}
public void withdraw(int id, double amount)
{
if(this.confirm(id))
{
if(amount > this.balance)
System.out.println("Not enough in account");
else
this.balance -= amount;
}
}
private boolean confirm(int id)
{
if(this.idNumber == id)
return true;
else
{
System.out.println("INVALID");
return false;
}
}
}
A) Describe what this class represents and what it does:
B) What methods make up the class’s public interface?
Explanation / Answer
Q(A)
This class represents a banking account with the member variables - Account holder's first and last name, Account number and the balance amount in the account.
The class supports different methods to manage the account - create a new account (constructor), make a deposit or withdraw amount and also confirm if an account id exists
Q(B) - Public methods
1. Creating a new accounts
public MyClass()
public MyClass(String firstName, String lastName, int id)
2. Make a deposit for the given account id and amount
public void makeDeposit(int id, double amount)
3. Withdraw amount from account
public void withdraw(int id, double amount)Q(A)
This class represents a banking account with the member variables - Account holder's first and last name, Account number and the balance amount in the account.
The class supports different methods to manage the account - create a new account (constructor), make a deposit or withdraw amount and also confirm if an account id exists
Q(B) - Public methods
1. Creating a new accounts
public MyClass()
public MyClass(String firstName, String lastName, int id)
2. Make a deposit for the given account id and amount
public void makeDeposit(int id, double amount)
3. Withdraw amount from account
public void withdraw(int id, double amount)