Move files into individual packages (#22)

* Move files into individual packages

src/main/java/Duke.java → src/main/java/duke/Duke.java

@@ -1,3 +1,12 @@
+package duke;
+
+import duke.action.Action;
+import duke.action.GoodbyeUser;
+import duke.action.WelcomeUser;
+import duke.exception.UserException;
+import duke.request.Request;
+import duke.task.TaskCollection;
+
 import java.util.Queue;
 import java.util.LinkedList;
 

src/main/java/Response.java → src/main/java/duke/Response.java

@@ -1,5 +1,7 @@
+package duke;
+
 /**
- * A Response from the application to some user input.
+ * A duke.Response from the application to some user input.
  */
 public class Response {
     public static String BASE_INDENT = "    ";
@@ -18,15 +20,15 @@ public Response() {
 
     /**
      * Creates a response with the specified String message.
-     * @param message The Response message.
+     * @param message The duke.Response message.
      */
     public Response(String message) {
         this(new String[]{ message });
     }
 
     /**
      * Creates a response with the specified String array.
-     * @param messages The Response message array.
+     * @param messages The duke.Response message array.
      */
     public Response(String[] messages) {
         this.message = String.join(System.lineSeparator(), messages);
@@ -43,8 +45,8 @@ public void add(String message) {
     }
 
     /**
-     * Converts the Response to its String representation.
-     * @return The String representation of the Response.
+     * Converts the duke.Response to its String representation.
+     * @return The String representation of the duke.Response.
      */
     @Override
     public String toString() {

src/main/java/Storage.java → src/main/java/duke/Storage.java

@@ -1,17 +1,19 @@
+package duke;
+
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.util.Scanner;
 
 /**
- * Storage class is responsible for dealing with loading tasks from file and saving tasks in the file.
+ * duke.Storage class is responsible for dealing with loading tasks from file and saving tasks in the file.
  */
 public class Storage {
     private final File file;
 
     /**
-     * Creates a new Storage instance at the specified path.
+     * Creates a new duke.Storage instance at the specified path.
      * @param pathname A pathname string
      */
     public Storage(String pathname) {
@@ -48,21 +50,21 @@ public String read() {
             scanner.close();
             return contents.toString();
         } catch (FileNotFoundException exception) {
-            throw new RuntimeException("File not found when trying to read file from Storage class.");
+            throw new RuntimeException("File not found when trying to read file from duke.Storage class.");
         }
     }
 
     /**
-     * Writes the specified contents into the Storage file.
-     * @param contents The String contents to write to the Storage file.
+     * Writes the specified contents into the duke.Storage file.
+     * @param contents The String contents to write to the duke.Storage file.
      */
     public void write(String contents) {
         try {
             FileWriter fileWriter = new FileWriter(this.file);
             fileWriter.write(contents);
             fileWriter.close();
         } catch (FileNotFoundException exception) {
-            throw new RuntimeException("File not found when trying to write to file from Storage class.");
+            throw new RuntimeException("File not found when trying to write to file from duke.Storage class.");
         } catch (IOException exception) {
             throw new RuntimeException(
                     String.format("An I/O exception occurred when trying to write to file %s\n", this.file.getPath())

src/main/java/Ui.java → src/main/java/duke/Ui.java

@@ -1,14 +1,16 @@
+package duke;
+
 import java.util.Scanner;
 
 /**
- * Ui represents the class that deals with interactions with the user
+ * duke.Ui represents the class that deals with interactions with the user
  */
 public class Ui {
     Scanner scanner = new Scanner(System.in);
 
     /**
-     * Prints the Response to the console.
-     * @param response The Response to be printed.
+     * Prints the duke.Response to the console.
+     * @param response The duke.Response to be printed.
      */
     public void printResponse(Response response) {
         System.out.println(response.toString());

src/main/java/Action.java → src/main/java/duke/action/Action.java

@@ -1,9 +1,13 @@
+package duke.action;
+
+import duke.Response;
+
 /**
  * The Action interface represents an action to be performed in the Duke application.
  */
 public interface Action {
     /**
-     * Executes the specified action and returns the resulting Response.
+     * Executes the specified action and returns the resulting duke.Response.
      */
     Response execute();
 }