[Singh Abdullah Alexander] iP

src/main/java/Chacha.java

@@ -6,15 +6,43 @@ public static void main(String[] args) {
         System.out.println("Hello! I'm Chacha\n" + "What can I do for you?");
         Scanner input = new Scanner(System.in);
         String s = input.nextLine();
-        ArrayList<String> list = new ArrayList<String>();
+        ArrayList<Task> taskList = new ArrayList<Task>();
         while (!s.equals("bye")) {
             if (s.equals("list")) {
-                for (int i = 0; i < list.size();i++) { 		      
-	                System.out.println(i + 1 + ". " + list.get(i)); 		
+                for (int i = 0; i < taskList.size();i++) {
+                    Task t = taskList.get(i);	      
+	                System.out.println(i + 1 + 
+                        ".[" + 
+                        t.getStatusIcon() + 
+                        "] " + 
+                        t.getDescription()); 		
 	            }   
+
+            } else if (s.contains("unmark")) {
+
+                String[] split = s.split("\\s+");
+                Task task = taskList.get(Integer.valueOf(split[1]) - 1);
+                task.unmarkAsDone();
+                System.out.println("OK, I've marked this task as not done yet:\n  [" + 
+                task.getStatusIcon() + 
+                "] " + 
+                task.getDescription());
+
+            } else if (s.contains("mark")) {
+                System.out.println(s.substring(0, 3));
+                String[] split = s.split("\\s+");
+                Task task = taskList.get(Integer.valueOf(split[1]) - 1);
+                System.out.println("here");
+                task.markAsDone();
+                System.out.println("Nice! I've marked this task as done:\n  [" + 
+                task.getStatusIcon() + 
+                "] " + 
+                task.getDescription());
+
             } else {
-                list.add(s);  
-                System.out.println("added: " + s);  
+                Task task = new Task(s);
+                taskList.add(task);  
+                System.out.println("added: " + task.getDescription());  
 
             } 
             s = input.nextLine();    

src/main/java/Task.java

@@ -0,0 +1,26 @@
+public class Task {
+    private String description;
+    private boolean isDone;
+
+    public Task(String description) {
+        this.description = description;
+        this.isDone = false;
+    }
+
+    public void markAsDone() {
+        this.isDone = true;
+    }
+
+    public void unmarkAsDone() {
+        this.isDone = false;
+    }
+
+    public String getStatusIcon() {
+        return (isDone ? "X" : " "); // mark done task with X
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+}