add lab11

src/ca/bcit/comp1510/lab11/Average.java

@@ -0,0 +1,36 @@
+package ca.bcit.comp1510.lab11;
+
+import java.lang.NumberFormatException;
+
+/**
+ * Average with command line args.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Average {
+
+    /**
+     * main program entry.
+     * @param args from command line.
+     */
+    public static void main(String[] args) {
+        if (args.length == 0) {
+            System.out.println("No arguments.");
+            return;
+        }
+
+        double total = 0.0;
+        int numbers = 0;
+        
+        for (int i = 0; i < args.length; i++) {
+            try {                
+                total += Double.parseDouble(args[i]);
+                numbers++;
+            } catch (NumberFormatException e) {
+                continue;
+            }
+        }
+        
+        System.out.println("Average: " + total / numbers);
+    }
+}

src/ca/bcit/comp1510/lab11/Coin.java

@@ -0,0 +1,123 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Represents a two-sided coin that can be flipped.  Modified over class
+ * example to use enum.
+ * 
+ * @author Lewis & Loftus 9e
+ * @author Bruce Link
+ * @author BCIT
+ * @version 2023
+ */
+public class Coin implements Lockable {
+    /** Enumeration type representing sides of a coin. */
+    public enum CoinFace {
+        /** the side of a coin considered tails. */
+        Tails,
+        /** the side of a coin considered heads. */
+        Heads
+    }
+
+    /** Coin's current face showing. */
+    private CoinFace face;
+
+    /** key to lock and unlock methods. */
+    private int key;
+    
+    /** locked indicates if functions can be used. */
+    private boolean locked;
+    
+    /**
+     * Constructs a Coin object and flips it to give it a starting value.
+     */
+    public Coin() {
+        this.key = 0;
+        this.locked = false;
+        flip();
+    }
+
+    /** 
+     * setKey value.
+     * @param key to set
+     */
+    public void setKey(int key) {
+        this.key = key;
+    }
+    
+    /**
+     * lock Object with key.
+     * @param keyIn to lock.
+     * @return success
+     */
+    public boolean lock(int keyIn) {
+        this.locked = this.key == keyIn ? true : this.locked;
+        return this.key == keyIn;
+    }
+    
+    /**
+     * unlock Object with key.
+     * @param keyIn to unlock.
+     * @return success
+     */
+    public boolean unlock(int keyIn) {
+        this.locked = this.key == keyIn ? false : this.locked;
+        return this.key == keyIn;
+    }
+
+    /**
+     * locked Object state.
+     * @return locked
+     */    
+    public boolean locked() {
+        return this.locked;
+    }
+    
+    /**
+     * Flips this Coin by randomly choosing a face value.
+     */
+    public void flip() {
+        if (this.locked) {
+            return;
+        }
+        final double half = 0.5;
+        if (Math.random() < half) {
+            face = CoinFace.Heads;
+        } else {
+            face = CoinFace.Tails;
+        }
+    }
+    
+    /**
+     * returns side of coin as CoinFace type.
+     * @return current showing face of this coin.
+     */
+    public CoinFace getFace() {
+        return face;
+    }
+    
+    /**
+     * set the coin face explicitly.  No required check on values as enum 
+     * CoinFace allows no illegal values to be passed.
+     * @param newFace the new face to show.
+     */
+    public void setFace(CoinFace newFace) {
+        face = newFace;
+    }
+
+    /**
+     * Returns true if the current face of the Coin is heads.
+     * @return true if current face is heads, else false.
+     */
+    public boolean isHeads() {
+        return face == CoinFace.Heads;
+    }
+
+    /**
+     * Returns the current face value of this Coin as a String.
+     * @return toString description
+     */
+    public String toString() {
+        return face.name();      
+    }
+}
+

src/ca/bcit/comp1510/lab11/Item.java

@@ -0,0 +1,78 @@
+package ca.bcit.comp1510.lab11;
+
+import java.text.DecimalFormat;
+
+/**
+ * Item class for POS System.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Item {
+
+    /** name of item. */
+    private final String name;
+     
+    /** price of item. */
+    private final double price;
+    
+    /** quanitity of item. */
+    private final int quantity;
+    
+    /**
+     * Item constructor.
+     * @param name of item
+     * @param price of item
+     * @param quantity of item
+     */
+    public Item(String name, double price, int quantity) {
+        this.name = name;
+        this.quantity = quantity;
+        DecimalFormat format = new DecimalFormat("#0.00");
+        this.price = Double.parseDouble(format.format(price));
+    }
+    
+    /**
+     * Item constructor with default quantity.
+     * @param name of item
+     * @param price of item
+     */
+    public Item(String name, double price) {
+        this.name = name;
+        DecimalFormat format = new DecimalFormat("#0.00");
+        this.price = Double.parseDouble(format.format(price));
+        this.quantity = 1;
+    }
+
+    /**
+     * getName of time.
+     * @return name of item
+     */
+    public String getName() {
+        return this.name;
+    }
+
+    /**
+     * getPrice of item.
+     * @return price of item
+     */
+    public double getPrice() {
+        return this.price;
+    }
+    
+    /**
+     * getQuantity of item.
+     * @return quantity of item
+     */
+    public int getQuantity() {
+        return this.quantity;
+    }
+    
+    /**
+     * toString gives string representation of item.
+     * @return string of item.
+     */
+    public String toString() {
+        return this.name + " $" + this.price 
+                + " x" + this.quantity;
+    }
+}

src/ca/bcit/comp1510/lab11/Item.sync-conflict-20250401-184119-KMJBCBL.java

@@ -0,0 +1,5 @@
+package ca.bcit.comp1510.lab11;
+
+public class Item {
+
+}

src/ca/bcit/comp1510/lab11/Item.sync-conflict-20250401-184149-KMJBCBL.java

@@ -0,0 +1,10 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Item class for POS System.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Item {
+
+}

src/ca/bcit/comp1510/lab11/Item.sync-conflict-20250401-184219-KMJBCBL.java

@@ -0,0 +1,13 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Item class for POS System.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Item {
+
+    private final String name;
+     
+    private 
+}

src/ca/bcit/comp1510/lab11/Item.sync-conflict-20250401-184229-KMJBCBL.java

@@ -0,0 +1,15 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Item class for POS System.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Item {
+
+    private final String name;
+     
+    private final double price;
+    
+    private final int quantity;
+}

src/ca/bcit/comp1510/lab11/Item.sync-conflict-20250401-184249-KMJBCBL.java

@@ -0,0 +1,16 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Item class for POS System.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Item {
+
+    /** name of item. */
+    private final String name;
+     
+    private final double price;
+    
+    private final int quantity;
+}

src/ca/bcit/comp1510/lab11/Item.sync-conflict-20250401-184309-KMJBCBL.java

@@ -0,0 +1,18 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Item class for POS System.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Item {
+
+    /** name of item. */
+    private final String name;
+     
+    /** price of item. */
+    private final double price;
+    
+    /** quanitity of item */
+    private final int quantity;
+}

src/ca/bcit/comp1510/lab11/Item.sync-conflict-20250401-185119-KMJBCBL.java

@@ -0,0 +1,83 @@
+package ca.bcit.comp1510.lab11;
+
+import java.text.DecimalFormat;
+import java.util.NumberFormat;
+
+/**
+ * Item class for POS System.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Item {
+
+    /** name of item. */
+    private final String name;
+     
+    /** price of item. */
+    private final double price;
+    
+    /** quanitity of item. */
+    private final int quantity;
+    
+    /**
+     * Item constructor.
+     * @param name of item
+     * @param price of item
+     * @param quantity of item
+     */
+    public Item(String name, double price, int quantity) {
+        this.name = name;
+        this.price = price;
+        this.quantity = quantity;
+        
+
+        DecimalFormat format = new DecimalFormat("#0.00");
+        return Double.parseDouble(format.format(a / this.students.size()));
+        
+        this.price = 
+    }
+    
+    /**
+     * Item constructor with default quantity.
+     * @param name of item
+     * @param price of item
+     */
+    public Item(String name, double price) {
+        this.name = name;
+        this.price = price;
+        this.quantity = 1;
+    }
+
+    /**
+     * getName of time.
+     * @return name of item
+     */
+    public String getName() {
+        return this.name;
+    }
+
+    /**
+     * getPrice of item.
+     * @return price of item
+     */
+    public double getPrice() {
+        return this.price;
+    }
+    
+    /**
+     * getQuantity of item.
+     * @return quantity of item
+     */
+    public int getQuantity() {
+        return this.quantity;
+    }
+    
+    /**
+     * toString gives string representation of item.
+     * @return string of item.
+     */
+    public String toString() {
+        return this.name + " $" + this.price 
+                + " x" + this.quantity;
+    }
+}

src/ca/bcit/comp1510/lab11/Lockable.java

@@ -0,0 +1,35 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Lockable does stuff.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public interface Lockable {
+    
+    /** 
+     * setKey value.
+     * @param key to set
+     */
+    void setKey(int key);
+    
+    /**
+     * lock Object with key.
+     * @param key to lock.
+     * @return success
+     */
+    boolean lock(int key);
+    
+    /**
+     * unlock Object with key.
+     * @param key to unlock.
+     * @return success
+     */
+    boolean unlock(int key);
+
+    /**
+     * locked Object state.
+     * @return locked
+     */    
+    boolean locked();
+}

src/ca/bcit/comp1510/lab11/LockableDriver.java

@@ -0,0 +1,44 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * LockableDriver drives Lockable Coin.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class LockableDriver {
+
+    /**
+     * main program entry.
+     * @param args unused.
+     */
+    public static void main(String[] args) {
+        Coin coin = new Coin();
+        
+        System.out.println("Coin is " 
+                + (coin.locked() ? "locked" : "unlocked"));
+        
+        System.out.println("Face: " + coin.getFace());
+        System.out.println("Flipping...");
+        coin.flip();
+        System.out.println("Face: " + coin.getFace());
+
+        System.out.println("Locking Coin...");
+        final int key = 984757;
+        coin.setKey(key);
+        coin.lock(key);
+        
+        System.out.println("Flipping...");
+        coin.flip();
+        System.out.println("Face: " + coin.getFace());
+        
+        System.out.println("No change in face value because " 
+                + "coin is locked and cannot be flipped.");
+        
+        System.out.println("Unlocking Coin...");
+        coin.unlock(key);
+        
+        System.out.println("Flipping...");
+        coin.flip();
+        System.out.println("Face: " + coin.getFace());
+    }
+}

src/ca/bcit/comp1510/lab11/LockableDriver.sync-conflict-20250401-181112-KMJBCBL.java

@@ -0,0 +1,19 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * LockableDriver drives Lockable Coin.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class LockableDriver {
+
+    /**
+     * main program entry.
+     * @param args unused.
+     */
+    public static void main(String[] args) {
+        Coin coin = new Coin();
+        
+        
+    }
+}

src/ca/bcit/comp1510/lab11/LockableImplementation.java

@@ -0,0 +1,70 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * LockableImplementation is a demo of 
+ * implementing Lockable interface.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class LockableImplementation implements Lockable {
+
+    /** key of class. */
+    private int key;
+    
+    /** locked state of class. */
+    private boolean locked;
+    
+    /** LockableImplementation empty constructor. */
+    public LockableImplementation() {
+        this.key = 0;
+        this.locked = false;
+    }
+
+    /** 
+     * setKey value.
+     * @param key to set
+     */
+    public void setKey(int key) {
+        this.key = key;
+    }
+    
+    /**
+     * lock Object with key.
+     * @param keyIn to lock.
+     * @return success
+     */
+    public boolean lock(int keyIn) {
+        this.locked = this.key == keyIn ? true : this.locked;
+        return this.key == keyIn;
+    }
+    
+    /**
+     * unlock Object with key.
+     * @param keyIn to unlock.
+     * @return success
+     */
+    public boolean unlock(int keyIn) {
+        this.locked = this.key == keyIn ? false : this.locked;
+        return this.key == keyIn;
+    }
+
+    /**
+     * locked Object state.
+     * @return locked
+     */    
+    public boolean locked() {
+        return this.locked;
+    }
+    
+    /** 
+     * doSomething as examplet to demo locked.
+     * @param data string
+     * */
+    public void doSomething(String data) {
+        if (this.locked) {
+            return;
+        }
+        
+        System.out.println("Doing something with " + data);
+    }
+}

src/ca/bcit/comp1510/lab11/ReverseArray.java

@@ -0,0 +1,83 @@
+package ca.bcit.comp1510.lab11;
+
+import java.util.Scanner;
+import java.util.Arrays;
+
+/**
+ * ReverseArray is self explanitory.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class ReverseArray {
+
+    /**
+     * readValidInt reads and validates an integer.
+     * @param msg to print;
+     * @param scan to read input
+     * @return validated int
+     */
+    private static int readValidInt(String msg, Scanner scan) {
+        int number = 0;
+        boolean valid = false;
+        
+        do {
+            System.out.print(msg);
+            
+            if (!scan.hasNextInt()) {
+                System.out.println(scan.next() + " is not a valid number.\n");
+                continue;
+            }
+            
+            number = scan.nextInt();
+            valid = true;
+
+        } while (!valid);
+                
+        return number;
+    }
+    
+    /**
+     * reverseIntArray reverses an array of ints.
+     * @param arr of ints.
+     * @return reversed array of ints.
+     */
+    private static int[] reverseIntArray(int[] arr) {
+        int n;
+        for (int i = 0; i < arr.length / 2; i++) {
+            n = arr[arr.length - 1 - i];
+            arr[arr.length - 1 - i] = arr[i];
+            arr[i] = n;
+        }
+        
+        return arr;
+    }
+    
+    /**
+     * main program entry.
+     * @param args unused
+     */
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+        
+        int length = readValidInt(
+                "Please enter the length for the array: ",
+                scan
+        );
+        
+        int[] arr = new int[length];
+
+        for (int i = 0; i < length; i++) {
+            int num = readValidInt(
+                    "Please enter a number: ",
+                    scan
+            );
+            arr[i] = num;
+        }
+        
+        System.out.println(Arrays.toString(arr));
+        
+        arr = reverseIntArray(arr);
+
+        System.out.println(Arrays.toString(arr));
+    }
+}

src/ca/bcit/comp1510/lab11/ReverseArray.sync-conflict-20250401-181512-KMJBCBL.java

@@ -0,0 +1,8 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * ReverseArray is self explanitory.
+ */
+public class ReverseArray {
+
+}

src/ca/bcit/comp1510/lab11/ReverseArray.sync-conflict-20250401-181532-KMJBCBL.java

@@ -0,0 +1,10 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * ReverseArray is self explanitory.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class ReverseArray {
+
+}

src/ca/bcit/comp1510/lab11/ReverseArray.sync-conflict-20250401-181552-KMJBCBL.java

@@ -0,0 +1,11 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * ReverseArray is self explanitory.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class ReverseArray {
+
+    
+}

src/ca/bcit/comp1510/lab11/ReverseArray.sync-conflict-20250401-182432-KMJBCBL.java

@@ -0,0 +1,13 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * ReverseArray is self explanitory.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class ReverseArray {
+
+    public static void main(String[] args) {
+        
+    }
+}

src/ca/bcit/comp1510/lab11/ReverseArray.sync-conflict-20250401-183019-KMJBCBL.java

@@ -0,0 +1,58 @@
+package ca.bcit.comp1510.lab11;
+
+import java.util.Scanner;
+
+/**
+ * ReverseArray is self explanitory.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class ReverseArray {
+
+    /**
+     * readValidInt reads and validates an integer.
+     * @param msg to print;
+     * @param scan to read input
+     * @return validated int
+     */
+    private static int readValidInt(String msg, Scanner scan) {
+        int number = 0;
+        boolean valid = false;
+        
+        do {
+            System.out.print(msg);
+            
+            if (!scan.hasNextInt()) {
+                System.out.println(scan.next() + " is not a valid number.\n");
+                continue;
+            }
+            
+            number = scan.nextInt();
+            valid = true;
+
+        } while (!valid);
+                
+        return number;
+    }
+    
+    /**
+     * main program entry.
+     * @param args unused
+     */
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+        
+        int length = readValidInt(
+                "Please enter the length for the array: ",
+                scan
+        );
+        
+        for (int i = 0; i < length; i++) {
+            int num = readValidInt(
+                    "Please enter a number: ",
+                    scan
+            );
+            
+        }        
+    }
+}

src/ca/bcit/comp1510/lab11/ReverseArray.sync-conflict-20250401-183909-KMJBCBL.java

@@ -0,0 +1,85 @@
+package ca.bcit.comp1510.lab11;
+
+import java.util.Scanner;
+import java.util.Arrays;
+
+/**
+ * ReverseArray is self explanitory.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class ReverseArray {
+
+    /**
+     * readValidInt reads and validates an integer.
+     * @param msg to print;
+     * @param scan to read input
+     * @return validated int
+     */
+    private static int readValidInt(String msg, Scanner scan) {
+        int number = 0;
+        boolean valid = false;
+        
+        do {
+            System.out.print(msg);
+            
+            if (!scan.hasNextInt()) {
+                System.out.println(scan.next() + " is not a valid number.\n");
+                continue;
+            }
+            
+            number = scan.nextInt();
+            valid = true;
+
+        } while (!valid);
+                
+        return number;
+    }
+    
+    /**
+     * reverseIntArray reverses an array of ints.
+     * @param arr of ints.
+     * @return reversed array of ints.
+     */
+    private static int[] reverseIntArray(int[] arr) {
+        int[] reversed = new int[arr.length];
+
+        int n;
+        for (int i = 0; i < arr.length / 2; i++) {
+            n = arr[arr.length - i];
+            arr[arr.length - i] = arr[i];
+            arr[i] = n;
+        }
+        
+        return reversed;
+    }
+    
+    /**
+     * main program entry.
+     * @param args unused
+     */
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+        
+        int length = readValidInt(
+                "Please enter the length for the array: ",
+                scan
+        );
+        
+        int[] arr = new int[length];
+
+        for (int i = 0; i < length; i++) {
+            int num = readValidInt(
+                    "Please enter a number: ",
+                    scan
+            );
+            arr[i] = num;
+        }
+        
+        System.out.println(Arrays.toString(arr));
+        
+        arr = reverseIntArray(arr);
+
+        System.out.println(Arrays.toString(arr));
+    }
+}

src/ca/bcit/comp1510/lab11/Shopping.java

@@ -0,0 +1,96 @@
+package ca.bcit.comp1510.lab11;
+
+import java.util.Scanner;
+
+/**
+ * Shopping cart driver.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Shopping {
+
+    /**
+     * readValidInt reads and validates an integer.
+     * @param msg to print;
+     * @param scan to read input
+     * @return validated int
+     */
+    private static int readValidInt(String msg, Scanner scan) {
+        int number = 0;
+        boolean valid = false;
+        
+        do {
+            System.out.print(msg);
+            
+            if (!scan.hasNextInt()) {
+                System.out.println(scan.next() + " is not a valid number.\n");
+                continue;
+            }
+            
+            number = scan.nextInt();
+            valid = true;
+
+        } while (!valid);
+                
+        return number;
+    }
+    
+    /**
+     * main program entry.
+     * @param args unused.
+     */
+    public static void main(String[] args) {        
+        Scanner scan = new Scanner(System.in);
+        
+
+        final double burgerPrice = 8.16;        
+        final double friesPrice = 3.25;
+        final double cokePrice = 2.75;
+        
+        int burgers = 0;
+        int fries = 0;
+        int cokes = 0;
+        
+        final int finish = 4;
+        int input = 0;
+
+        final String msg = "Select an item to add to cart:\n"
+                + "(1). Burger $8.16\n"
+                + "(2). Fries  $3.25\n"
+                + "(3). Coke   $2.75\n"
+                + "(4). Proceed to Checkout\n"
+                + "> ";
+        
+        final int startSize = 3;
+        Transaction cart = new Transaction(startSize);
+
+        final int t = 3;
+        final int f = 4;
+        
+        do {
+            input = readValidInt(msg, scan);
+            
+            switch (input) {
+                case 1:
+                    cart.addToCart("Burger", burgerPrice, 1);
+                    break;
+                case 2:
+                    cart.addToCart("fries", fries, 1);
+                    break;
+                case t:
+                    cart.addToCart(new Item("Coke", cokePrice, 1));
+                    break;
+                case f:
+                    System.out.println("Checking Out...");
+                    System.out.println(cart.getCount() + " items comes to " 
+                            + cart.getTotalPrice());
+                    break;
+                default:
+                    System.out.println(input + " is not a valid input.");
+                    break;
+            }
+        } while (input != finish);
+        
+        scan.close();
+    }
+}

src/ca/bcit/comp1510/lab11/Shopping.sync-conflict-20250401-191950-KMJBCBL.java

@@ -0,0 +1,5 @@
+package ca.bcit.comp1510.lab11;
+
+public class Shopping {
+
+}

src/ca/bcit/comp1510/lab11/Shopping.sync-conflict-20250401-192000-KMJBCBL.java

@@ -0,0 +1,10 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Shopping cart driver.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Shopping {
+
+}

src/ca/bcit/comp1510/lab11/Shopping.sync-conflict-20250401-192200-KMJBCBL.java

@@ -0,0 +1,18 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Shopping cart driver.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Shopping {
+
+    /**
+     * main program entry.
+     * @param args unused.
+     */
+    public static void main(String[] args) {
+        final int burgerPrice = 3.16;
+        Item burger = new Item("Burger", 8.16, 1);
+    }
+}

src/ca/bcit/comp1510/lab11/Transaction.java

@@ -0,0 +1,90 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Transaction of items.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Transaction {
+
+    /** items in transaction. */
+    private Item[] items;
+    
+    /** totalPrice of transaction. */
+    private double totalPrice;
+    
+    /** itemCount of transaction. */
+    private int itemCount;
+    
+    /**
+     * Tramsaction constructor.
+     * @param size of items;
+     */
+    public Transaction(int size) {
+        this.items = new Item[size];
+        this.totalPrice = 0;
+        this.itemCount = 0;
+    }
+
+    /**
+     * addToCart creates an item to add to cart.
+     * @param name of item
+     * @param price of item
+     * @param quantity of item
+     */
+    public void addToCart(String name, double price, int quantity) {
+        Item item = new Item(name, price, quantity);
+        
+        if (this.itemCount == this.items.length) {
+            increaseSize();
+        }
+
+        this.items[itemCount] = item;
+        this.itemCount++;
+        
+        this.totalPrice += price * quantity;
+    }
+
+    /**
+     * addToCart adds existing item to cart.
+     * @param item to add
+     */
+    public void addToCart(Item item) {
+        if (this.itemCount == this.items.length) {
+            increaseSize();
+        }
+        
+        this.items[itemCount] = item;
+        this.itemCount++;
+        
+        this.totalPrice += item.getPrice() * item.getQuantity();
+    }
+    
+    /** increaseSize of cart. */
+    public void increaseSize() {
+        final int up = 3;
+        Item[] updatedItems = new Item[this.items.length + up];
+        
+        for (int i = 0; i < this.itemCount; i++) {
+            updatedItems[i] = this.items[i];
+        }
+        
+        this.items = updatedItems;
+    }
+    
+    /**
+     * getTotalPrice gets total price.
+     * @return total price
+     */
+    public double getTotalPrice() {
+        return this.totalPrice;
+    }
+    
+    /**
+     * getCount of items.
+     * @return number of items.
+     */
+    public int getCount() {
+        return this.itemCount;
+    }
+}

src/ca/bcit/comp1510/lab11/Transaction.sync-conflict-20250401-190059-KMJBCBL.java

@@ -0,0 +1,32 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Transaction of items.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Transaction {
+
+    /** items in transaction. */
+    private Item[] items;
+    
+    /** totalPrice of transaction. */
+    private double totalPrice;
+    
+    /** itemCount of transaction. */
+    private int itemCount;
+    
+    /**
+     * Tramsaction constructor.
+     * @param size of items;
+     */
+    public Transaction(int size) {
+        this.items = new Item[size];
+        this.totalPrice = 0;
+        this.itemCount = 0;
+    }
+    
+    public void addToCart(String name, double price, int quantity) {
+        Item item = new Item(name, price, quantity);
+    }
+}

src/ca/bcit/comp1510/lab11/Transaction.sync-conflict-20250401-190602-KMJBCBL.java

@@ -0,0 +1,63 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Transaction of items.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Transaction {
+
+    /** items in transaction. */
+    private Item[] items;
+    
+    /** totalPrice of transaction. */
+    private double totalPrice;
+    
+    /** itemCount of transaction. */
+    private int itemCount;
+    
+    /**
+     * Tramsaction constructor.
+     * @param size of items;
+     */
+    public Transaction(int size) {
+        this.items = new Item[size];
+        this.totalPrice = 0;
+        this.itemCount = 0;
+    }
+
+    /**
+     * addToCart creates an item to add to cart.
+     * @param name of item
+     * @param price of item
+     * @param quantity of item
+     */
+    public void addToCart(String name, double price, int quantity) {
+        Item item = new Item(name, price, quantity);
+        
+        if (this.itemCount == this.items.length) {
+            
+        }
+
+        this.items[itemCount] = item;
+        this.itemCount++;
+        
+        this.totalPrice += price * quantity;
+    }
+
+    /**
+     * addToCart adds existing item to cart.
+     * @param item to add
+     */
+    public void addToCart(Item item) {
+        this.items[itemCount] = item;
+        this.itemCount++;
+        
+        this.totalPrice += item.getPrice() * item.getQuantity();
+    }
+    
+    /** increaseSize of cart. */
+    public void increaseSize() {
+        
+    }
+}

src/ca/bcit/comp1510/lab11/Transaction.sync-conflict-20250401-190827-KMJBCBL.java

@@ -0,0 +1,72 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Transaction of items.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Transaction {
+
+    /** items in transaction. */
+    private Item[] items;
+    
+    /** totalPrice of transaction. */
+    private double totalPrice;
+    
+    /** itemCount of transaction. */
+    private int itemCount;
+    
+    /**
+     * Tramsaction constructor.
+     * @param size of items;
+     */
+    public Transaction(int size) {
+        this.items = new Item[size];
+        this.totalPrice = 0;
+        this.itemCount = 0;
+    }
+
+    /**
+     * addToCart creates an item to add to cart.
+     * @param name of item
+     * @param price of item
+     * @param quantity of item
+     */
+    public void addToCart(String name, double price, int quantity) {
+        Item item = new Item(name, price, quantity);
+        
+        if (this.itemCount == this.items.length) {
+            increaseSize();
+        }
+
+        this.items[itemCount] = item;
+        this.itemCount++;
+        
+        this.totalPrice += price * quantity;
+    }
+
+    /**
+     * addToCart adds existing item to cart.
+     * @param item to add
+     */
+    public void addToCart(Item item) {
+        if (this.itemCount == this.items.length) {
+            increaseSize();
+        }
+        
+        this.items[itemCount] = item;
+        this.itemCount++;
+        
+        this.totalPrice += item.getPrice() * item.getQuantity();
+    }
+    
+    /** increaseSize of cart. */
+    public void increaseSize() {
+        final int up = 3;
+        Item[] updatedItems = new Item[this.items.length + up];
+        
+        for (int i = 0; i < this.itemCount; i++) {
+            updatedItems[i] = this.items[i];
+        }
+    }
+}

src/ca/bcit/comp1510/lab11/Transaction.sync-conflict-20250401-190849-KMJBCBL.java

@@ -0,0 +1,74 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Transaction of items.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Transaction {
+
+    /** items in transaction. */
+    private Item[] items;
+    
+    /** totalPrice of transaction. */
+    private double totalPrice;
+    
+    /** itemCount of transaction. */
+    private int itemCount;
+    
+    /**
+     * Tramsaction constructor.
+     * @param size of items;
+     */
+    public Transaction(int size) {
+        this.items = new Item[size];
+        this.totalPrice = 0;
+        this.itemCount = 0;
+    }
+
+    /**
+     * addToCart creates an item to add to cart.
+     * @param name of item
+     * @param price of item
+     * @param quantity of item
+     */
+    public void addToCart(String name, double price, int quantity) {
+        Item item = new Item(name, price, quantity);
+        
+        if (this.itemCount == this.items.length) {
+            increaseSize();
+        }
+
+        this.items[itemCount] = item;
+        this.itemCount++;
+        
+        this.totalPrice += price * quantity;
+    }
+
+    /**
+     * addToCart adds existing item to cart.
+     * @param item to add
+     */
+    public void addToCart(Item item) {
+        if (this.itemCount == this.items.length) {
+            increaseSize();
+        }
+        
+        this.items[itemCount] = item;
+        this.itemCount++;
+        
+        this.totalPrice += item.getPrice() * item.getQuantity();
+    }
+    
+    /** increaseSize of cart. */
+    public void increaseSize() {
+        final int up = 3;
+        Item[] updatedItems = new Item[this.items.length + up];
+        
+        for (int i = 0; i < this.itemCount; i++) {
+            updatedItems[i] = this.items[i];
+        }
+        
+        this.items = updatedItems;
+    }
+}

src/ca/bcit/comp1510/lab11/~syncthing~Item.java.tmp

@@ -0,0 +1,78 @@
+package ca.bcit.comp1510.lab11;
+
+import java.text.DecimalFormat;
+
+/**
+ * Item class for POS System.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Item {
+
+    /** name of item. */
+    private final String name;
+     
+    /** price of item. */
+    private final double price;
+    
+    /** quanitity of item. */
+    private final int quantity;
+    
+    /**
+     * Item constructor.
+     * @param name of item
+     * @param price of item
+     * @param quantity of item
+     */
+    public Item(String name, double price, int quantity) {
+        this.name = name;
+        this.quantity = quantity;
+        DecimalFormat format = new DecimalFormat("#0.00");
+        this.price = Double.parseDouble(format.format(price));
+    }
+    
+    /**
+     * Item constructor with default quantity.
+     * @param name of item
+     * @param price of item
+     */
+    public Item(String name, double price) {
+        this.name = name;
+        DecimalFormat format = new DecimalFormat("#0.00");
+        this.price = Double.parseDouble(format.format(price));
+        this.quantity = 1;
+    }
+
+    /**
+     * getName of time.
+     * @return name of item
+     */
+    public String getName() {
+        return this.name;
+    }
+
+    /**
+     * getPrice of item.
+     * @return price of item
+     */
+    public double getPrice() {
+        return this.price;
+    }
+    
+    /**
+     * getQuantity of item.
+     * @return quantity of item
+     */
+    public int getQuantity() {
+        return this.quantity;
+    }
+    
+    /**
+     * toString gives string representation of item.
+     * @return string of item.
+     */
+    public String toString() {
+        return this.name + " $" + this.price 
+                + " x" + this.quantity;
+    }
+}

src/ca/bcit/comp1510/lab11/~syncthing~Item.sync-conflict-20250401-184119-KMJBCBL.java.tmp

@@ -0,0 +1,5 @@
+package ca.bcit.comp1510.lab11;
+
+public class Item {
+
+}

src/ca/bcit/comp1510/lab11/~syncthing~Item.sync-conflict-20250401-184149-KMJBCBL.java.tmp

@@ -0,0 +1,10 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Item class for POS System.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Item {
+
+}

src/ca/bcit/comp1510/lab11/~syncthing~Item.sync-conflict-20250401-184219-KMJBCBL.java.tmp

@@ -0,0 +1,13 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Item class for POS System.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Item {
+
+    private final String name;
+     
+    private 
+}

src/ca/bcit/comp1510/lab11/~syncthing~Item.sync-conflict-20250401-184229-KMJBCBL.java.tmp

@@ -0,0 +1,15 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Item class for POS System.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Item {
+
+    private final String name;
+     
+    private final double price;
+    
+    private final int quantity;
+}

src/ca/bcit/comp1510/lab11/~syncthing~Item.sync-conflict-20250401-184249-KMJBCBL.java.tmp

@@ -0,0 +1,16 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Item class for POS System.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Item {
+
+    /** name of item. */
+    private final String name;
+     
+    private final double price;
+    
+    private final int quantity;
+}

src/ca/bcit/comp1510/lab11/~syncthing~Item.sync-conflict-20250401-184309-KMJBCBL.java.tmp

@@ -0,0 +1,18 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Item class for POS System.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Item {
+
+    /** name of item. */
+    private final String name;
+     
+    /** price of item. */
+    private final double price;
+    
+    /** quanitity of item */
+    private final int quantity;
+}

src/ca/bcit/comp1510/lab11/~syncthing~Item.sync-conflict-20250401-185119-KMJBCBL.java.tmp

@@ -0,0 +1,83 @@
+package ca.bcit.comp1510.lab11;
+
+import java.text.DecimalFormat;
+import java.util.NumberFormat;
+
+/**
+ * Item class for POS System.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Item {
+
+    /** name of item. */
+    private final String name;
+     
+    /** price of item. */
+    private final double price;
+    
+    /** quanitity of item. */
+    private final int quantity;
+    
+    /**
+     * Item constructor.
+     * @param name of item
+     * @param price of item
+     * @param quantity of item
+     */
+    public Item(String name, double price, int quantity) {
+        this.name = name;
+        this.price = price;
+        this.quantity = quantity;
+        
+
+        DecimalFormat format = new DecimalFormat("#0.00");
+        return Double.parseDouble(format.format(a / this.students.size()));
+        
+        this.price = 
+    }
+    
+    /**
+     * Item constructor with default quantity.
+     * @param name of item
+     * @param price of item
+     */
+    public Item(String name, double price) {
+        this.name = name;
+        this.price = price;
+        this.quantity = 1;
+    }
+
+    /**
+     * getName of time.
+     * @return name of item
+     */
+    public String getName() {
+        return this.name;
+    }
+
+    /**
+     * getPrice of item.
+     * @return price of item
+     */
+    public double getPrice() {
+        return this.price;
+    }
+    
+    /**
+     * getQuantity of item.
+     * @return quantity of item
+     */
+    public int getQuantity() {
+        return this.quantity;
+    }
+    
+    /**
+     * toString gives string representation of item.
+     * @return string of item.
+     */
+    public String toString() {
+        return this.name + " $" + this.price 
+                + " x" + this.quantity;
+    }
+}

src/ca/bcit/comp1510/lab11/~syncthing~LockableDriver.sync-conflict-20250401-181112-KMJBCBL.java.tmp

@@ -0,0 +1,19 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * LockableDriver drives Lockable Coin.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class LockableDriver {
+
+    /**
+     * main program entry.
+     * @param args unused.
+     */
+    public static void main(String[] args) {
+        Coin coin = new Coin();
+        
+        
+    }
+}

src/ca/bcit/comp1510/lab11/~syncthing~ReverseArray.java.tmp

@@ -0,0 +1,85 @@
+package ca.bcit.comp1510.lab11;
+
+import java.util.Scanner;
+import java.util.Arrays;
+
+/**
+ * ReverseArray is self explanitory.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class ReverseArray {
+
+    /**
+     * readValidInt reads and validates an integer.
+     * @param msg to print;
+     * @param scan to read input
+     * @return validated int
+     */
+    private static int readValidInt(String msg, Scanner scan) {
+        int number = 0;
+        boolean valid = false;
+        
+        do {
+            System.out.print(msg);
+            
+            if (!scan.hasNextInt()) {
+                System.out.println(scan.next() + " is not a valid number.\n");
+                continue;
+            }
+            
+            number = scan.nextInt();
+            valid = true;
+
+        } while (!valid);
+                
+        return number;
+    }
+    
+    /**
+     * reverseIntArray reverses an array of ints.
+     * @param arr of ints.
+     * @return reversed array of ints.
+     */
+    private static int[] reverseIntArray(int[] arr) {
+        int[] reversed = new int[arr.length];
+
+        int n;
+        for (int i = 0; i < arr.length / 2; i++) {
+            n = arr[arr.length - 1 - i];
+            arr[arr.length - 1 - i] = arr[i];
+            arr[i] = n;
+        }
+        
+        return reversed;
+    }
+    
+    /**
+     * main program entry.
+     * @param args unused
+     */
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+        
+        int length = readValidInt(
+                "Please enter the length for the array: ",
+                scan
+        );
+        
+        int[] arr = new int[length];
+
+        for (int i = 0; i < length; i++) {
+            int num = readValidInt(
+                    "Please enter a number: ",
+                    scan
+            );
+            arr[i] = num;
+        }
+        
+        System.out.println(Arrays.toString(arr));
+        
+        arr = reverseIntArray(arr);
+
+        System.out.println(Arrays.toString(arr));
+    }
+}

src/ca/bcit/comp1510/lab11/~syncthing~ReverseArray.sync-conflict-20250401-181512-KMJBCBL.java.tmp

@@ -0,0 +1,8 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * ReverseArray is self explanitory.
+ */
+public class ReverseArray {
+
+}

src/ca/bcit/comp1510/lab11/~syncthing~ReverseArray.sync-conflict-20250401-181532-KMJBCBL.java.tmp

@@ -0,0 +1,10 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * ReverseArray is self explanitory.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class ReverseArray {
+
+}

src/ca/bcit/comp1510/lab11/~syncthing~ReverseArray.sync-conflict-20250401-181552-KMJBCBL.java.tmp

@@ -0,0 +1,11 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * ReverseArray is self explanitory.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class ReverseArray {
+
+    
+}

src/ca/bcit/comp1510/lab11/~syncthing~ReverseArray.sync-conflict-20250401-183019-KMJBCBL.java.tmp

@@ -0,0 +1,58 @@
+package ca.bcit.comp1510.lab11;
+
+import java.util.Scanner;
+
+/**
+ * ReverseArray is self explanitory.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class ReverseArray {
+
+    /**
+     * readValidInt reads and validates an integer.
+     * @param msg to print;
+     * @param scan to read input
+     * @return validated int
+     */
+    private static int readValidInt(String msg, Scanner scan) {
+        int number = 0;
+        boolean valid = false;
+        
+        do {
+            System.out.print(msg);
+            
+            if (!scan.hasNextInt()) {
+                System.out.println(scan.next() + " is not a valid number.\n");
+                continue;
+            }
+            
+            number = scan.nextInt();
+            valid = true;
+
+        } while (!valid);
+                
+        return number;
+    }
+    
+    /**
+     * main program entry.
+     * @param args unused
+     */
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+        
+        int length = readValidInt(
+                "Please enter the length for the array: ",
+                scan
+        );
+        
+        for (int i = 0; i < length; i++) {
+            int num = readValidInt(
+                    "Please enter a number: ",
+                    scan
+            );
+            
+        }        
+    }
+}

src/ca/bcit/comp1510/lab11/~syncthing~ReverseArray.sync-conflict-20250401-183909-KMJBCBL.java.tmp

@@ -0,0 +1,85 @@
+package ca.bcit.comp1510.lab11;
+
+import java.util.Scanner;
+import java.util.Arrays;
+
+/**
+ * ReverseArray is self explanitory.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class ReverseArray {
+
+    /**
+     * readValidInt reads and validates an integer.
+     * @param msg to print;
+     * @param scan to read input
+     * @return validated int
+     */
+    private static int readValidInt(String msg, Scanner scan) {
+        int number = 0;
+        boolean valid = false;
+        
+        do {
+            System.out.print(msg);
+            
+            if (!scan.hasNextInt()) {
+                System.out.println(scan.next() + " is not a valid number.\n");
+                continue;
+            }
+            
+            number = scan.nextInt();
+            valid = true;
+
+        } while (!valid);
+                
+        return number;
+    }
+    
+    /**
+     * reverseIntArray reverses an array of ints.
+     * @param arr of ints.
+     * @return reversed array of ints.
+     */
+    private static int[] reverseIntArray(int[] arr) {
+        int[] reversed = new int[arr.length];
+
+        int n;
+        for (int i = 0; i < arr.length / 2; i++) {
+            n = arr[arr.length - i];
+            arr[arr.length - i] = arr[i];
+            arr[i] = n;
+        }
+        
+        return reversed;
+    }
+    
+    /**
+     * main program entry.
+     * @param args unused
+     */
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+        
+        int length = readValidInt(
+                "Please enter the length for the array: ",
+                scan
+        );
+        
+        int[] arr = new int[length];
+
+        for (int i = 0; i < length; i++) {
+            int num = readValidInt(
+                    "Please enter a number: ",
+                    scan
+            );
+            arr[i] = num;
+        }
+        
+        System.out.println(Arrays.toString(arr));
+        
+        arr = reverseIntArray(arr);
+
+        System.out.println(Arrays.toString(arr));
+    }
+}

src/ca/bcit/comp1510/lab11/~syncthing~Shopping.sync-conflict-20250401-192000-KMJBCBL.java.tmp

@@ -0,0 +1,10 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Shopping cart driver.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Shopping {
+
+}

src/ca/bcit/comp1510/lab11/~syncthing~Transaction.java.tmp

@@ -0,0 +1,72 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Transaction of items.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Transaction {
+
+    /** items in transaction. */
+    private Item[] items;
+    
+    /** totalPrice of transaction. */
+    private double totalPrice;
+    
+    /** itemCount of transaction. */
+    private int itemCount;
+    
+    /**
+     * Tramsaction constructor.
+     * @param size of items;
+     */
+    public Transaction(int size) {
+        this.items = new Item[size];
+        this.totalPrice = 0;
+        this.itemCount = 0;
+    }
+
+    /**
+     * addToCart creates an item to add to cart.
+     * @param name of item
+     * @param price of item
+     * @param quantity of item
+     */
+    public void addToCart(String name, double price, int quantity) {
+        Item item = new Item(name, price, quantity);
+        
+        if (this.itemCount == this.items.length) {
+            increaseSize();
+        }
+
+        this.items[itemCount] = item;
+        this.itemCount++;
+        
+        this.totalPrice += price * quantity;
+    }
+
+    /**
+     * addToCart adds existing item to cart.
+     * @param item to add
+     */
+    public void addToCart(Item item) {
+        if (this.itemCount == this.items.length) {
+            increaseSize();
+        }
+        
+        this.items[itemCount] = item;
+        this.itemCount++;
+        
+        this.totalPrice += item.getPrice() * item.getQuantity();
+    }
+    
+    /** increaseSize of cart. */
+    public void increaseSize() {
+        final int up = 3;
+        Item[] updatedItems = new Item[this.items.length + up];
+        
+        for (int i = 0; i < this.itemCount; i++) {
+            updatedItems[i] = this.items[i];
+        }
+    }
+}

src/ca/bcit/comp1510/lab11/~syncthing~Transaction.sync-conflict-20250401-190059-KMJBCBL.java.tmp

@@ -0,0 +1,32 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Transaction of items.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Transaction {
+
+    /** items in transaction. */
+    private Item[] items;
+    
+    /** totalPrice of transaction. */
+    private double totalPrice;
+    
+    /** itemCount of transaction. */
+    private int itemCount;
+    
+    /**
+     * Tramsaction constructor.
+     * @param size of items;
+     */
+    public Transaction(int size) {
+        this.items = new Item[size];
+        this.totalPrice = 0;
+        this.itemCount = 0;
+    }
+    
+    public void addToCart(String name, double price, int quantity) {
+        Item item = new Item(name, price, quantity);
+    }
+}

src/ca/bcit/comp1510/lab11/~syncthing~Transaction.sync-conflict-20250401-190827-KMJBCBL.java.tmp

@@ -0,0 +1,72 @@
+package ca.bcit.comp1510.lab11;
+
+/**
+ * Transaction of items.
+ * @author Braeden Sowinski
+ * @version 1.0.0
+ */
+public class Transaction {
+
+    /** items in transaction. */
+    private Item[] items;
+    
+    /** totalPrice of transaction. */
+    private double totalPrice;
+    
+    /** itemCount of transaction. */
+    private int itemCount;
+    
+    /**
+     * Tramsaction constructor.
+     * @param size of items;
+     */
+    public Transaction(int size) {
+        this.items = new Item[size];
+        this.totalPrice = 0;
+        this.itemCount = 0;
+    }
+
+    /**
+     * addToCart creates an item to add to cart.
+     * @param name of item
+     * @param price of item
+     * @param quantity of item
+     */
+    public void addToCart(String name, double price, int quantity) {
+        Item item = new Item(name, price, quantity);
+        
+        if (this.itemCount == this.items.length) {
+            increaseSize();
+        }
+
+        this.items[itemCount] = item;
+        this.itemCount++;
+        
+        this.totalPrice += price * quantity;
+    }
+
+    /**
+     * addToCart adds existing item to cart.
+     * @param item to add
+     */
+    public void addToCart(Item item) {
+        if (this.itemCount == this.items.length) {
+            increaseSize();
+        }
+        
+        this.items[itemCount] = item;
+        this.itemCount++;
+        
+        this.totalPrice += item.getPrice() * item.getQuantity();
+    }
+    
+    /** increaseSize of cart. */
+    public void increaseSize() {
+        final int up = 3;
+        Item[] updatedItems = new Item[this.items.length + up];
+        
+        for (int i = 0; i < this.itemCount; i++) {
+            updatedItems[i] = this.items[i];
+        }
+    }
+}