Fix Gradle bugs and add jar

Author: geetengtan

data/duke.txt

@@ -1,2 +1 @@
-E#false#party #2022-01-22
 T#false#borrow book

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

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

src/main/java/duke/Deadline.java src/main/java/seedu/duke/Deadline.java

@@ -1,8 +1,8 @@
-package duke;
+package seedu.duke;
 
 import java.time.LocalDate;
 
-class Deadline extends Task {
+public class Deadline extends Task {
 
     Deadline(String description, LocalDate deadline) {
         super(description, deadline);

src/main/java/duke/Duke.java src/main/java/seedu/duke/Duke.java

@@ -1,4 +1,4 @@
-package duke;
+package seedu.duke;
 
 import java.util.Scanner;
 
@@ -14,7 +14,7 @@ public Duke(String filePath) {
 
         try {
             tasks = new TaskList(storage.load());
-        } catch (DukeException e) {
+        } catch (Exception e) {
             ui.showLoadingError();
             System.out.println(e);
             tasks = new TaskList();

src/main/java/duke/DukeAbsentInfoException.java src/main/java/seedu/duke/DukeAbsentInfoException.java

@@ -1,6 +1,6 @@
-package duke;
+package seedu.duke;
 
-class DukeAbsentInfoException extends DukeException {
+public class DukeAbsentInfoException extends DukeException {
 
     DukeAbsentInfoException(String message) {
         super(message);

src/main/java/duke/DukeException.java src/main/java/seedu/duke/DukeException.java

@@ -1,6 +1,6 @@
-package duke;
+package seedu.duke;
 
-class DukeException extends Exception {
+public class DukeException extends Exception {
 
     String message;
 

src/main/java/duke/DukeIdxOOBException.java src/main/java/seedu/duke/DukeIdxOOBException.java

@@ -1,6 +1,6 @@
-package duke;
+package seedu.duke;
 
-class DukeIdxOOBException extends DukeException {
+public class DukeIdxOOBException extends DukeException {
 
     DukeIdxOOBException() {
         super("☹ OOPS!!! The index specified is out of bounds.");

src/main/java/duke/Event.java src/main/java/seedu/duke/Event.java

@@ -1,8 +1,8 @@
-package duke;
+package seedu.duke;
 
 import java.time.LocalDate;
 
-class Event extends Task {
+public class Event extends Task {
 
     Event(String description, LocalDate time) {
         super(description, time);

src/main/java/duke/Parser.java src/main/java/seedu/duke/Parser.java

@@ -1,7 +1,7 @@
-package duke;
+package seedu.duke;
 import java.time.LocalDate;
 
-class Parser {
+public class Parser {
 
     private static final int LIST = 0;
     private static final int TODO = 1;

src/main/java/duke/Storage.java src/main/java/seedu/duke/Storage.java

@@ -1,12 +1,12 @@
-package duke;
+package seedu.duke;
 
 import java.io.FileWriter;
 import java.util.ArrayList;
 import java.io.File;
 import java.util.Scanner;
 import java.io.FileNotFoundException;
 
-class Storage {
+public class Storage {
 
     private String filepath;
 

src/main/java/duke/Task.java src/main/java/seedu/duke/Task.java

@@ -1,10 +1,10 @@
-package duke;
+package seedu.duke;
 
 import java.util.Optional;
 import java.time.LocalDate;
 import java.time.format.DateTimeFormatter;
 
-abstract class Task {
+public abstract class Task {
 
     protected static final DateTimeFormatter dateFormatter = DateTimeFormatter.ofPattern("LLL dd yyyy");
 

src/main/java/duke/TaskList.java src/main/java/seedu/duke/TaskList.java

@@ -1,8 +1,8 @@
-package duke;
+package seedu.duke;
 
 import java.util.ArrayList;
 
-class TaskList {
+public class TaskList {
 
     private ArrayList<Task> tasks;
 

src/main/java/duke/ToDo.java src/main/java/seedu/duke/ToDo.java

@@ -1,6 +1,6 @@
-package duke;
+package seedu.duke;
 
-class ToDo extends Task {
+public class ToDo extends Task {
 
     ToDo(String description) {
         super(description);

src/main/java/duke/Ui.java src/main/java/seedu/duke/Ui.java

@@ -1,6 +1,6 @@
-package duke;
+package seedu.duke;
 
-class Ui {
+public class Ui {
 
     private static final int LIST = 0;
     private static final int TODO = 1;

src/test/java/duke/ParserTest.java

@@ -1,4 +1,4 @@
-package duke;
+package seedu.duke;
 
 import org.junit.jupiter.api.Test;
 

src/test/java/duke/TaskListTest.java

@@ -1,4 +1,4 @@
-package duke;
+package seedu.duke;
 
 import org.junit.jupiter.api.Test;