diff --git a/main/Logic/Core.java b/main/Logic/Core.java
index 9160ce7..3b815e7 100644
--- a/main/Logic/Core.java
+++ b/main/Logic/Core.java
@@ -8,7 +8,6 @@
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Calendar;
-import java.util.Date;
 import java.util.Scanner;
 
 import org.fusesource.jansi.AnsiConsole;
@@ -30,8 +29,6 @@ public class Core {
 	private static Sort sortObject;
 
 	private static final int INVALID_TASK_INDEX = -1;
-	private static final String[] WEEK = { "monday", "tuesday", "wednesday", "thursday", "friday", "saturday",
-			                               "sunday" };
 	private static final String[] KEY = { "by", "at", "during", "before", "to", "in" };
 	private static final String MSG_EMPTY = "Storage is empty. Press \"add\" to add task.";
 	private static final String MSG_CLEAR = "All content deleted";
diff --git a/main/Logic/ImportTasks.java b/main/Logic/ImportTasks.java
index 4db6418..1c5c030 100644
--- a/main/Logic/ImportTasks.java
+++ b/main/Logic/ImportTasks.java
@@ -37,8 +37,6 @@ public class ImportTasks {
 	private static final String STRING_BACKSLASH = "\\";
 	private static final String STRING_DEFAULT = "default";
 	private static final String STRING_EMPTY = "";
-
-	private static final Logger logger = Logger.getLogger(Class.class.getName());
 	
 	private Crud crudObject;
 	
@@ -216,7 +214,6 @@ private void writeNewDirectory(String directory) throws IOException {
 }
 
 class LoggerTry {
-	private final static Logger logger = Logger.getLogger(Class.class.getName());
 	private static FileHandler fileHandler = null;
 
 	public static void startLog() throws SecurityException, IOException {
diff --git a/main/Task/Task.java b/main/Task/Task.java
index 9df82b5..0fbdd30 100644
--- a/main/Task/Task.java
+++ b/main/Task/Task.java
@@ -7,6 +7,8 @@
 import Parser.Natty;
 
 public class Task implements java.io.Serializable {
+	
+	private static final long serialVersionUID = 1L;
 	private String issue;
 	private String msg;
 	private ArrayList<String> label;
diff --git a/main/unitTest/CrudTest.java b/main/unitTest/CrudTest.java
index 7f19bc1..fcf7708 100644
--- a/main/unitTest/CrudTest.java
+++ b/main/unitTest/CrudTest.java
@@ -1,28 +1,19 @@
 //@@author Cheng Gee
 package unitTest;
 
-import static org.junit.Assert.*;
+import static org.fusesource.jansi.Ansi.ansi;
+import static org.junit.Assert.assertEquals;
 
 import java.awt.HeadlessException;
 import java.awt.Toolkit;
 import java.awt.datatransfer.DataFlavor;
 import java.awt.datatransfer.UnsupportedFlavorException;
-import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
-import java.io.InputStream;
 import java.io.PrintStream;
-import java.util.ArrayList;
-import java.util.Scanner;
-import java.util.logging.Level;
-import java.util.logging.Logger;
-import static org.fusesource.jansi.Ansi.ansi;
 
-import org.fusesource.jansi.AnsiConsole;
 import org.junit.Test;
 
-
-import Logic.CheckDate;
 import Logic.Crud;
 import Storage.LocalStorage;
 import Task.Task;
diff --git a/main/unitTest/ParserTest.java b/main/unitTest/ParserTest.java
index a6f8419..4fbde9a 100644
--- a/main/unitTest/ParserTest.java
+++ b/main/unitTest/ParserTest.java
@@ -1,13 +1,14 @@
 //@@author Jung Kai
 package unitTest;
 
-import static org.junit.Assert.*;
-import Parser.Parser;
-import Parser.Natty;
-import Task.Task;
-import java.util.ArrayList;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
 import org.junit.Test;
 
+import Parser.Natty;
+import Parser.Parser;
+
 public class ParserTest {
 	private static final String input1 = "add floating task";
 	private static final String input2 = "add task ` from 11/04/2016";
@@ -27,7 +28,6 @@ public class ParserTest {
 	private static final String input16 = "undo";
 
 	private String issue, startDate, endDate, description, processed;
-	private boolean isRecurring;
 	protected Parser parse;
 	protected Natty natty;