[Tze Loong] iP

src/main/java/Duke.java

@@ -1,10 +1,77 @@
+import java.util.Scanner;
+
 public class Duke {
-    public static void main(String[] args) {
+
+    public static void greet_user() {
+        System.out.println("Hello! I'm Duke \n");
         String logo = " ____        _        \n"
                 + "|  _ \\ _   _| | _____ \n"
                 + "| | | | | | | |/ / _ \\\n"
                 + "| |_| | |_| |   <  __/\n"
                 + "|____/ \\__,_|_|\\_\\___|\n";
-        System.out.println("Hello from\n" + logo);
+        System.out.println(logo);
+        System.out.println("How can i help u? \n");
+    }
+
+    public static void echo() {
+        Scanner scan = new Scanner(System.in);
+
+        String input = scan.next();
+        if ("bye".equals(input)) {
+            System.out.println("Goodbye. Hope to see u again :) \n");
+        } else {
+            System.out.println(input);
+            echo();
+        }
+
+        scan.close();
+
+    }
+
+    public static void main(String[] args) {
+        greet_user();
+        int counter = 0;
+
+        Tasks[] list_of_tasks = new Tasks[101]; // Following the assumption that there will be no more than 100 tasks
+        for (int k = 0; k < 101; k++) {
+            list_of_tasks[k] = new Tasks("");
+        }
+
+        Scanner scan = new Scanner(System.in);
+        String input = scan.nextLine();
+
+        while (!"bye".equals(input)) {
+            if ("list".equals(input)) {
+                System.out.println("Here are the tasks in your list: ");
+                for (int i = 0; i < counter; i++) {
+                    System.out.println(
+                            i + 1 + "." + " " + list_of_tasks[i].getStatusIcon() + " " + list_of_tasks[i].description);
+                }
+            } else if (input.length() >= 4 && input.substring(0, 4).equals("mark")) {
+                Integer index = Integer.valueOf(input.substring(5, input.length()));
+                list_of_tasks[index - 1].markAsDone();
+                System.out.println("Nice! This task is completed");
+                System.out
+                        .println(list_of_tasks[index - 1].getStatusIcon() + " " + list_of_tasks[index - 1].description);
+            } else if (input.length() >= 6 && input.substring(0, 6).equals("unmark")) {
+                Integer index = Integer.valueOf(input.substring(7, input.length()));
+                list_of_tasks[index - 1].markAsUnDone();
+                System.out.println("Ok, This task is still not complete");
+                System.out
+                        .println(list_of_tasks[index - 1].getStatusIcon() + " " + list_of_tasks[index - 1].description);
+            } else {
+                System.out.println("added: " + input);
+                list_of_tasks[counter].description = input;
+                list_of_tasks[counter].isDone = false;
+                counter++;
+            }
+            scan = new Scanner(System.in);
+            input = scan.nextLine();
+
+        }
+
+        System.out.println("Goodbye. Hope to see u again :) \n");
+        scan.close();
     }
+
 }

src/main/java/Tasks.java

@@ -0,0 +1,23 @@
+public class Tasks {
+
+  protected String description;
+  protected boolean isDone;
+
+  public Tasks(String description) {
+    this.description = description;
+    this.isDone = false;
+  }
+
+  public String getStatusIcon() {
+    return (isDone ? "[X]" : "[ ]"); // mark done task with X
+  }
+
+  public void markAsDone() {
+    this.isDone = true;
+  }
+
+  public void markAsUnDone() {
+    this.isDone = false;
+  }
+
+}