Add OOP/Java/Assignments/FISAC/Q1.java

OOP/Java/Assignments/FISAC/Q1.java

@@ -0,0 +1,98 @@
+import java.util.*;
+
+class Warehouse {
+    String productId;
+    int quantity;
+    int unitCost;
+
+    Warehouse(String productId, int quantity, int unitCost) {
+        this.productId = productId;
+        this.quantity = quantity;
+        this.unitCost = unitCost;
+    }
+}
+
+class Order {
+    int orderedQuantity;
+    int orderId;
+    String date;
+
+    Order(int orderedQuantity, int orderId, String date) {
+        this.orderedQuantity = orderedQuantity;
+        this.orderId = orderId;
+        this.date = date;
+    }
+}
+
+class BookOrderThread extends Thread {
+        private Warehouse warehouse;
+    private Order order;
+    private static List<Order> orderList = new ArrayList<>();
+
+    BookOrderThread(Warehouse warehouse, Order order) {
+        this.warehouse = warehouse;
+        this.order = order;
+    }
+
+    public void run() {
+        try {
+                        checkAvailableQuantity();
+            computeTotCost();
+            orderList.add(order);
+        } catch (Exception e) {
+            System.out.println(e.getMessage());
+        } 
+    }
+
+    private void checkAvailableQuantity() throws Exception {
+        if (warehouse.quantity == 0) {
+            throw new Exception("Order cannot be placed");
+        }
+        if (order.orderedQuantity == 0) {
+            throw new Exception("Order quantity is invalid");
+        }
+        if (order.orderedQuantity > warehouse.quantity) {
+            throw new Exception("Out of Stock for " + warehouse.productId);
+        }
+    }
+
+    private void computeTotCost() {
+        warehouse.quantity -= order.orderedQuantity;
+        int totalCost = order.orderedQuantity * warehouse.unitCost;
+        System.out.println("OrderID: " + order.orderId + " Total Cost: " + totalCost);
+    }
+
+    public static void displaySortedOrders() {
+        orderList.sort(Comparator.comparing(o -> o.date));
+        for (Order o : orderList) {
+            System.out.println("OrderID: " + o.orderId + " Date: " + o.date);
+        }
+    }
+}
+
+public class Main {
+    public static void main(String[] args) {
+        Warehouse warehouse = new Warehouse("P001", 50, 100);
+        Order o1 = new Order(10, 101, "2023-10-01");
+        Order o2 = new Order(20, 102, "2023-10-03");
+        Order o3 = new Order(25, 103, "2023-10-02");
+
+        Thread t1 = new BookOrderThread(warehouse, o1);
+        Thread t2 = new BookOrderThread(warehouse, o2);
+        Thread t3 = new BookOrderThread(warehouse, o3);
+
+        t1.start();
+        t2.start();
+        t3.start();
+
+        try {
+            t1.join();
+            t2.join();
+            t3.join();
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+
+        BookOrderThread.displaySortedOrders();
+    }
+}