Moved Income, Expense, Item, overview and test classes into a package

src/main/java/no/ntnu/idatt1002/demo/data/Expense.java → src/main/java/no/ntnu/idatt1002/demo/data/Economics/Expense.java

-package no.ntnu.idatt1002.demo.data;
+package no.ntnu.idatt1002.demo.data.Economics;
 
 public class Expense extends Item{
     private ExpenseCategory category;

src/main/java/no/ntnu/idatt1002/demo/data/ExpenseCategory.java → src/main/java/no/ntnu/idatt1002/demo/data/Economics/ExpenseCategory.java

-package no.ntnu.idatt1002.demo.data;
+package no.ntnu.idatt1002.demo.data.Economics;
 
 public enum ExpenseCategory {
 

src/main/java/no/ntnu/idatt1002/demo/data/ExpenseOverview.java → src/main/java/no/ntnu/idatt1002/demo/data/Economics/ExpenseOverview.java

-package no.ntnu.idatt1002.demo.data;
+package no.ntnu.idatt1002.demo.data.Economics;
 
 import java.util.ArrayList;
+
+/**
+ *ExpenseOverview is an abstract class for storing and getting
+ * information on Expense.
+ */
 public class ExpenseOverview {
     private ArrayList<Expense> expenses;
 
     public ExpenseOverview(){
         this.expenses = new ArrayList<>();
     }
+
+    /**
+     * Class constructor that takes in an ArrayList of Expense´s as argument
+     * @param expenses   An ArrayList of the Expense´s you want to overview
+     */
+    public ExpenseOverview(ArrayList<Expense> expenses){
+        this.expenses = expenses;
+    }
 }

src/main/java/no/ntnu/idatt1002/demo/data/Income.java → src/main/java/no/ntnu/idatt1002/demo/data/Economics/Income.java

-package no.ntnu.idatt1002.demo.data;
+package no.ntnu.idatt1002.demo.data.Economics;
 
 /**
  * The Income class inherits from the Item class. The Item class additionally has a private field for an

src/main/java/no/ntnu/idatt1002/demo/data/IncomeCategory.java → src/main/java/no/ntnu/idatt1002/demo/data/Economics/IncomeCategory.java

-package no.ntnu.idatt1002.demo.data;
+package no.ntnu.idatt1002.demo.data.Economics;
 
 public enum IncomeCategory {
     SALARY,

src/main/java/no/ntnu/idatt1002/demo/data/IncomeOverview.java → src/main/java/no/ntnu/idatt1002/demo/data/Economics/IncomeOverview.java

-package no.ntnu.idatt1002.demo.data;
+package no.ntnu.idatt1002.demo.data.Economics;
 
 import java.util.ArrayList;
 
+/**
+ * IncomeOverview is an abstract class for storing and getting
+ * information on income.
+ */
 public class IncomeOverview extends ItemOverview {
     private ArrayList<Income> income;
 
+    /**
+     * An "empty" class constructor.
+     */
     public IncomeOverview(){
         this.income = new ArrayList<>();
     }
+
+    /**
+     * Class constructor that takes in an ArrayList of Income as argument
+     * @param income   An ArrayList of the Income you want to overview
+     */
+    public IncomeOverview(ArrayList<Income> income){
+        this.income = income;
+    }
 }

src/main/java/no/ntnu/idatt1002/demo/data/Item.java → src/main/java/no/ntnu/idatt1002/demo/data/Economics/Item.java

-package no.ntnu.idatt1002.demo.data;
+package no.ntnu.idatt1002.demo.data.Economics;
 
 /**
  * The Item class represents a good or service purchased in real life. The item belongs to a category and
@@ -7,7 +7,7 @@ package no.ntnu.idatt1002.demo.data;
  * @author HanneSofie
  *
  */
-public class Item {
+public abstract class Item {
     private String description = "";
     private double amount;
     private boolean recurring;

src/main/java/no/ntnu/idatt1002/demo/data/ItemOverview.java → src/main/java/no/ntnu/idatt1002/demo/data/Economics/ItemOverview.java

-package no.ntnu.idatt1002.demo.data;
+package no.ntnu.idatt1002.demo.data.Economics;
 
 import java.util.ArrayList;
 
 /**
- * ItemOverview is a class for storing and getting
- * information on items. It is meant for storing EITHER
- * Income or Expense
+ * ItemOverview is an abstract class for storing and getting
+ * information on items. Superclass for Income- and ExpenseOverview.
  */
 public abstract class ItemOverview {
     ArrayList<Item> items;

src/test/java/no/ntnu/idatt1002/demo/data/ExpenseTest.java → src/test/java/no/ntnu/idatt1002/demo/data/Economics/ExpenseTest.java

-package no.ntnu.idatt1002.demo.data;
+package no.ntnu.idatt1002.demo.data.Economics;
 
+import no.ntnu.idatt1002.demo.data.Economics.Expense;
+import no.ntnu.idatt1002.demo.data.Economics.ExpenseCategory;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 

src/test/java/no/ntnu/idatt1002/demo/data/IncomeOverviewTest.java → src/test/java/no/ntnu/idatt1002/demo/data/Economics/IncomeOverviewTest.java

-package no.ntnu.idatt1002.demo.data;
+package no.ntnu.idatt1002.demo.data.Economics;
 
+import no.ntnu.idatt1002.demo.data.Economics.Income;
+import no.ntnu.idatt1002.demo.data.Economics.IncomeCategory;
+import no.ntnu.idatt1002.demo.data.Economics.IncomeOverview;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;

src/test/java/no/ntnu/idatt1002/demo/data/IncomeTest.java → src/test/java/no/ntnu/idatt1002/demo/data/Economics/IncomeTest.java

-package no.ntnu.idatt1002.demo.data;
+package no.ntnu.idatt1002.demo.data.Economics;
 
+import no.ntnu.idatt1002.demo.data.Economics.Income;
+import no.ntnu.idatt1002.demo.data.Economics.IncomeCategory;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 

src/test/java/no/ntnu/idatt1002/demo/data/ItemTest.java → src/test/java/no/ntnu/idatt1002/demo/data/Economics/ItemTest.java

-package no.ntnu.idatt1002.demo.data;
+package no.ntnu.idatt1002.demo.data.Economics;
 
+import no.ntnu.idatt1002.demo.data.Economics.Item;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;