CSC1109_Tutorials/Week8_Lab/Submission/CSC1109_Lab7_2200624.tex

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\begin{document}

\title{CSC 1109 Lab 7}

\author{Woon Jun Wei, 2200624}

\date{\today}

\maketitle

\section*{Question 1}
\begin{lstlisting}[label={list:CircleWithException},caption=CircleWithException.java]
import java.util.Scanner;

public class CircleWithException {
    private double radius;

    public CircleWithException(double radius) throws IllegalArgumentException {
        if (radius < 0) {
            throw new IllegalArgumentException("Radius cannot be negative");
        }
        this.radius = radius;
    }

    public double getRadius() {
        return radius;
    }

    public void setRadius(double radius) throws IllegalArgumentException {
        if (radius < 0) {
            throw new IllegalArgumentException("Radius cannot be negative");
        }
        this.radius = radius;
    }

    public double getArea() throws Exception{
        double area = Math.PI * radius * radius;

        if (area > 1000){
            throw new Exception("Area cannot be greater than 1000");
        }
        return area;
    }

    // Exceptions not stated in Lab Instructions
    public double getDiameter() {
        return radius * 2;
    }

    public static void main(String[] args) {
        CircleWithException c1 = new CircleWithException(5);
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter a radius: ");
        double radius = sc.nextDouble();
        try {
            CircleWithException c2 = new CircleWithException(radius);
            System.out.println("Radius: " + c2.getRadius());
            System.out.println("Area: " + c2.getArea());
            System.out.println("Diameter: " + c2.getDiameter());
        } catch (IllegalArgumentException e) {
            System.out.println(e.getMessage());
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }

}
\end{lstlisting}

\begin{lstlisting}[label={list:CircleWithException},caption=CircleWithException.java Output]
// Negative radius
Enter a radius: -10
Radius cannot be negative

// Area Greater than 1000
Enter a radius: 1000
Radius: 1000.0
Area cannot be greater than 1000

// Valid Circle
Enter a radius: 5
Radius: 5.0
Area: 78.53981633974483
Diameter: 10.0
\end{lstlisting}

\pagebreak

\section*{Question 2}

\begin{lstlisting}[label={list:InsufficientFundsException},caption=InsufficientFundsException.java]
public class InsufficientFundsException extends Exception{
    private double amount;
    public InsufficientFundsException(double amount){
        this.amount = amount;
    }
    public double getAmount(){
        return amount;
    }
}

\end{lstlisting}

\begin{lstlisting}[label={list:CheckingAccount},caption=CheckingAccount.java]
public class CheckingAccount extends InsufficientFundsException{

    private double balance;
    private int number;

    public CheckingAccount(double amount) {
        super(amount);
    }

    public CheckingAccount(){
        this(0);
    }

    public void deposit(double amount){
        if (amount > 0){
            this.balance += amount;
        }
    }

    public void withdraw(double amount) throws InsufficientFundsException{
        if (amount > this.balance){
            throw new InsufficientFundsException(amount);
        }
    }
    public double getBalance(){
        return this.balance;
    }

    public int getNumber(){
        return this.number;
    }


}
\end{lstlisting}

\begin{lstlisting}[label={list:BankDemoTest},caption=BankDemoTest.java]
import java.util.Scanner;
public class BankDemoTest {
    public static void main(String[] args){
        CheckingAccount c = new CheckingAccount();
        Scanner sc = new Scanner(System.in);

        System.out.print("Enter an amount to deposit: ");
        double amount = sc.nextDouble();
        c.deposit(amount);
        System.out.print("Enter an amount to withdraw: ");
        amount = sc.nextDouble();
        try{
            c.withdraw(amount);
        }catch(InsufficientFundsException e){
            if (e.getAmount() > c.getBalance()){
                System.out.println("Sorry, but your account is short by: $" + (e.getAmount() - c.getBalance()));
            }
        }
        if (amount <= c.getBalance())
            System.out.println("The balance after withdrawal is: $" + (c.getBalance() - amount));
    }
}
\end{lstlisting}

\begin{lstlisting}[label={list:BankDemoTestOutput},caption=BankDemoTest.java Output]
// $yy < $xx
Enter an amount to deposit: 100
Enter an amount to withdraw: 20
The balance after withdrawal is: $80.0

// $yy > $xx
Enter an amount to deposit: 100
Enter an amount to withdraw: 254
Sorry, but your account is short by: $154.0
\end{lstlisting}
\end{document}