ListScanner

Author: AvinavCHATTERJEE2103028

ListScanner/readme.md

@@ -0,0 +1,23 @@
+# List Scanner (Java)
+
+This is a simple console-based List Scanner application implemented in Java.
+
+## How to Use
+
+1. Compile and run `Main.java`.
+2. Choose options to manage tasks in your To-Do List.
+3. Follow the on-screen instructions to add, list, mark as completed, or remove tasks.
+
+## Features
+
+- Add new tasks with descriptions.
+- List all tasks in the To-Do List.
+- Mark tasks as completed.
+- Remove tasks from the list.
+- Interactive console interface.
+
+## Technologies Used
+
+- Java
+
+Feel free to modify the code to add more features or extend its functionality.

ListScanner/scanner.java

@@ -0,0 +1,127 @@
+import java.util.ArrayList;
+import java.util.Scanner;
+
+public class ToDoListApp {
+    private static ArrayList<Task> taskList = new ArrayList<>();
+    private static int taskIdCounter = 1;
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+
+        while (true) {
+            System.out.println("To-Do List Application");
+            System.out.println("1. Add Task");
+            System.out.println("2. List Tasks");
+            System.out.println("3. Mark Task as Completed");
+            System.out.println("4. Remove Task");
+            System.out.println("5. Exit");
+            System.out.print("Enter your choice: ");
+
+            int choice = scanner.nextInt();
+            scanner.nextLine(); // Consume the newline
+
+            switch (choice) {
+                case 1:
+                    addTask(scanner);
+                    break;
+                case 2:
+                    listTasks();
+                    break;
+                case 3:
+                    markTaskAsCompleted(scanner);
+                    break;
+                case 4:
+                    removeTask(scanner);
+                    break;
+                case 5:
+                    System.out.println("Goodbye!");
+                    System.exit(0);
+                default:
+                    System.out.println("Invalid choice. Please try again.");
+            }
+        }
+    }
+
+    private static void addTask(Scanner scanner) {
+        System.out.print("Enter the task description: ");
+        String description = scanner.nextLine();
+        Task task = new Task(taskIdCounter, description);
+        taskList.add(task);
+        taskIdCounter++;
+        System.out.println("Task added successfully!");
+    }
+
+    private static void listTasks() {
+        if (taskList.isEmpty()) {
+            System.out.println("No tasks to display.");
+        } else {
+            System.out.println("Tasks:");
+            for (Task task : taskList) {
+                System.out.println(task);
+            }
+        }
+    }
+
+    private static void markTaskAsCompleted(Scanner scanner) {
+        System.out.print("Enter the task ID to mark as completed: ");
+        int taskId = scanner.nextInt();
+        scanner.nextLine(); // Consume the newline
+
+        for (Task task : taskList) {
+            if (task.getId() == taskId) {
+                task.setCompleted(true);
+                System.out.println("Task marked as completed.");
+                return;
+            }
+        }
+        System.out.println("Task not found.");
+    }
+
+    private static void removeTask(Scanner scanner) {
+        System.out.print("Enter the task ID to remove: ");
+        int taskId = scanner.nextInt();
+        scanner.nextLine(); // Consume the newline
+
+        for (Task task : taskList) {
+            if (task.getId() == taskId) {
+                taskList.remove(task);
+                System.out.println("Task removed.");
+                return;
+            }
+        }
+        System.out.println("Task not found.");
+    }
+}
+
+class Task {
+    private int id;
+    private String description;
+    private boolean completed;
+
+    public Task(int id, String description) {
+        this.id = id;
+        this.description = description;
+        this.completed = false;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public boolean isCompleted() {
+        return completed;
+    }
+
+    public void setCompleted(boolean completed) {
+        this.completed = completed;
+    }
+
+    @Override
+    public String toString() {
+        return id + ". [" + (completed ? "X" : " ") + "] " + description;
+    }
+}