Change '\u2713' and '\u2717' into 'DONE' and 'NOT DONE'

src/main/java/META-INF/MANIFEST.MF

@@ -0,0 +1,3 @@
+Manifest-Version: 1.0
+Main-Class: duke.Duke
+

src/main/java/duke/tasks/Task.java

@@ -3,8 +3,6 @@
 public class Task {
     public boolean isDone;
     public String name;
-    public char tick = '\u2713';
-    public char cross = '\u2717';
 
     public Task(String name) {
         isDone = false;
@@ -21,6 +19,6 @@ public void markAsDone() {
     }
 
     public String toString() {
-        return String.format("[%c] %s", isDone ? tick : cross, name);
+        return String.format("[%s] %s", isDone ? "DONE" : "NOT DONE", name);
     }
 }

src/test/java/duke/tasks/DeadlineTest.java

@@ -12,7 +12,7 @@ public class DeadlineTest {
     @Test
     public void testToString() {
         Deadline deadline = new Deadline("return book", LocalDate.parse("2020-06-06", DateTimeFormatter.ofPattern("yyyy-MM-dd")));
-        String expected = "[D][✗] return book (by: Jun 06 2020)";
+        String expected = "[D][NOT DONE] return book (by: Jun 06 2020)";
         assertEquals(expected, deadline.toString());
     }
 }

src/test/java/duke/tasks/EventTest.java

@@ -12,7 +12,7 @@ public class EventTest {
     @Test
     public void testToString() {
         Event event = new Event("project meeting", LocalDate.parse("2020-08-06", DateTimeFormatter.ofPattern("yyyy-MM-dd")));
-        String expected = "[E][✗] project meeting (at: Aug 06 2020)";
+        String expected = "[E][NOT DONE] project meeting (at: Aug 06 2020)";
         assertEquals(expected, event.toString());
     }
 }

src/test/java/duke/tasks/ToDoTest.java

@@ -9,7 +9,7 @@ public class ToDoTest {
     @Test
     public void testToString() {
         ToDo toDo = new ToDo("read book");
-        String expected = "[T][✗] read book";
+        String expected = "[T][NOT DONE] read book";
         assertEquals(expected, toDo.toString());
     }
 }

text-ui-test/EXPECTED.TXT

@@ -7,67 +7,67 @@ There are no tasks in your list.
 ____________________________________________________________
 ____________________________________________________________
 Got it. I've added this task:
-[T][✗] read book
+[T][NOT DONE] read book
 Now you have 1 task in the list.
 ____________________________________________________________
 ____________________________________________________________
 Nice! I've marked this task as done:
-[T][✓] read book
+[T][DONE] read book
 ____________________________________________________________
 ____________________________________________________________
 Got it. I've added this task:
-[D][✗] return book (by: Jun 06 2020)
+[D][NOT DONE] return book (by: Jun 06 2020)
 Now you have 2 tasks in the list.
 ____________________________________________________________
 ____________________________________________________________
 Nice! I've marked this task as done:
-[D][✓] return book (by: Jun 06 2020)
+[D][DONE] return book (by: Jun 06 2020)
 ____________________________________________________________
 ____________________________________________________________
 Got it. I've added this task:
-[E][✗] project meeting (at: Aug 06 2020)
+[E][NOT DONE] project meeting (at: Aug 06 2020)
 Now you have 3 tasks in the list.
 ____________________________________________________________
 ____________________________________________________________
 Got it. I've added this task:
-[T][✗] join sports club
+[T][NOT DONE] join sports club
 Now you have 4 tasks in the list.
 ____________________________________________________________
 ____________________________________________________________
 Nice! I've marked this task as done:
-[T][✓] join sports club
+[T][DONE] join sports club
 ____________________________________________________________
 ____________________________________________________________
 Got it. I've added this task:
-[T][✗] borrow book
+[T][NOT DONE] borrow book
 Now you have 5 tasks in the list.
 ____________________________________________________________
 ____________________________________________________________
 Here are the tasks in your list:
-1.[T][✓] read book
-2.[D][✓] return book (by: Jun 06 2020)
-3.[E][✗] project meeting (at: Aug 06 2020)
-4.[T][✓] join sports club
-5.[T][✗] borrow book
+1.[T][DONE] read book
+2.[D][DONE] return book (by: Jun 06 2020)
+3.[E][NOT DONE] project meeting (at: Aug 06 2020)
+4.[T][DONE] join sports club
+5.[T][NOT DONE] borrow book
 ____________________________________________________________
 ____________________________________________________________
 Noted. I've removed this task:
-[E][✗] project meeting (at: Aug 06 2020)
+[E][NOT DONE] project meeting (at: Aug 06 2020)
 Now you have 4 tasks in the list.
 ____________________________________________________________
 ____________________________________________________________
 The following deadlines/events are scheduled on Jun 06 2020.
-1.[D][✓] return book (by: Jun 06 2020)
+1.[D][DONE] return book (by: Jun 06 2020)
 ____________________________________________________________
 ____________________________________________________________
 There are no deadlines/events scheduled on Jan 01 2020.
 ____________________________________________________________
 ____________________________________________________________
 Here are the tasks in your list:
-1.[T][✓] read book
-2.[D][✓] return book (by: Jun 06 2020)
-3.[T][✓] join sports club
-4.[T][✗] borrow book
+1.[T][DONE] read book
+2.[D][DONE] return book (by: Jun 06 2020)
+3.[T][DONE] join sports club
+4.[T][NOT DONE] borrow book
 ____________________________________________________________
 ____________________________________________________________
 Bye. Hope to see you again soon!