```java
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
class Task {
private String description;
private boolean isCompleted;
public Task(String description) {
this.description = description;
this.isCompleted = false;
}
public String getDescription() {
return description;
}
public boolean isCompleted() {
return isCompleted;
}
public void markAsCompleted() {
isCompleted = true;
}
}
public class ToDoList {
private List<Task> tasks;
public ToDoList() {
this.tasks = new ArrayList<>();
}
public void addTask(String description) {
Task task = new Task(description);
tasks.add(task);
System.out.println("Task added: " + description);
}
public void completeTask(int index) {
if (index >= 0 && index < tasks.size()) {
Task task = tasks.get(index);
task.markAsCompleted();
System.out.println("Task completed: " + task.getDescription());
} else {
System.out.println("Invalid task index.");
}
}
public void viewTasks() {
if (tasks.isEmpty()) {
System.out.println("No tasks found.");
} else {
System.out.println("Tasks:");
for (int i = 0; i < tasks.size(); i++) {
Task task = tasks.get(i);
String status = task.isCompleted() ? "[X]" : "[ ]";
System.out.println(i + ". " + status + " " + task.getDescription());
}
}
}
public static void main(String[] args) {
ToDoList toDoList = new ToDoList();
Scanner scanner = new Scanner(System.in);
while (true) {
System.out.println("To-Do List");
System.out.println("1. Add Task");
System.out.println("2. Complete Task");
System.out.println("3. View Tasks");
System.out.println("4. Exit");
System.out.print("Enter your choice: ");
int choice = scanner.nextInt();
scanner.nextLine(); // Consume newline
switch (choice) {
case 1:
System.out.print("Enter task description: ");
String description = scanner.nextLine();
toDoList.addTask(description);
break;
case 2:
System.out.print("Enter task index: ");
int index = scanner.nextInt();
toDoList.completeTask(index);
break;
case 3:
toDoList.viewTasks();
break;
case 4:
System.exit(0);
break;
default:
System.out.println("Invalid choice. Please try again.");
break;
}
System.out.println();
}
}
}
```
In this implementation, the `Task` class represents a single task with a description and completion status. The `ToDoList` class manages the collection of tasks, allowing you to add tasks, mark them as completed, and view the tasks. The main method sets up a simple console-based user interface to interact with the to-do list functionality.
0 Comments