diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..c5f3f6b
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,3 @@
+{
+    "java.configuration.updateBuildConfiguration": "interactive"
+}
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index bde0b59..08ced97 100644
--- a/pom.xml
+++ b/pom.xml
@@ -9,4 +9,12 @@
     <version>1.0-SNAPSHOT</version>
 
 
+
+  <dependencies>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>4.13.2</version>
+    </dependency>
+  </dependencies>
 </project>
\ No newline at end of file
diff --git a/src/main/java/com/zipcodewilmington/centrallibrary/Book.java b/src/main/java/com/zipcodewilmington/centrallibrary/Book.java
new file mode 100644
index 0000000..db39c7c
--- /dev/null
+++ b/src/main/java/com/zipcodewilmington/centrallibrary/Book.java
@@ -0,0 +1,52 @@
+package com.zipcodewilmington.centrallibrary;
+
+public   class Book extends LibraryItem {
+    private String author;
+    private String genre;
+    private String isbn;
+    private int pages;
+
+    
+
+    public Book(String author, String genre, String isbn, int numberOfPages) {
+       
+        this.author = author;
+        this.genre = genre;
+        this.isbn = isbn;
+        this.pages = numberOfPages;
+        
+    }
+    
+
+    public String getAuthor() {
+        return author;
+    }
+    public void setAuthor(String author) {
+        this.author = author;
+
+    }
+
+    public String getGenre() {
+        return genre;
+    }
+    public void setGenre(String genre) {
+        this.genre = genre;
+    }
+
+    public String getIsbn() {
+        return isbn;
+    }
+
+    public void setIsbn(String isbn) {
+        this.isbn = isbn;
+    }
+
+    public int getPages() {
+        return pages;
+    }
+    public void setPages(int pages) {
+        this.pages = pages;
+        
+    }
+}
+
diff --git a/src/main/java/com/zipcodewilmington/centrallibrary/BookTest.java b/src/main/java/com/zipcodewilmington/centrallibrary/BookTest.java
new file mode 100644
index 0000000..9357472
--- /dev/null
+++ b/src/main/java/com/zipcodewilmington/centrallibrary/BookTest.java
@@ -0,0 +1,21 @@
+package com.zipcodewilmington.centrallibrary;
+
+public class BookTest {
+
+public static void main(String[] args) {
+
+    Book book = new Book("A100", "The Great Gatsby", "Aisle 3", 180); 
+    
+
+    System.out.println(book.getAuthor());
+    System.out.println(book.getGenre());
+    System.out.println(book.getPages());
+    System.out.println(book.isAvailable());
+    System.out.println(book.getLocation());
+    System.out.println(book.getId());
+    System.out.println(book.getTitle());
+    
+}
+
+
+}
diff --git a/src/main/java/com/zipcodewilmington/centrallibrary/LibraryItem.java b/src/main/java/com/zipcodewilmington/centrallibrary/LibraryItem.java
new file mode 100644
index 0000000..776cd2b
--- /dev/null
+++ b/src/main/java/com/zipcodewilmington/centrallibrary/LibraryItem.java
@@ -0,0 +1,80 @@
+package com.zipcodewilmington.centrallibrary;
+
+
+public  class LibraryItem  {
+    private int id;
+    private String title;
+    private String location;
+    private boolean isAvailable;
+    private String isbn;
+
+//constructor
+
+
+    public LibraryItem() {
+
+    }
+
+    public LibraryItem(int id, String title, String location){
+        this.id = id;
+        this.title = title;
+        this.location = location; 
+        this.isAvailable = true;
+
+       //getters and setters 
+        
+    }
+    public int getId() {
+        return id;
+    }
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getLocation() {
+        return location;
+    }
+    public void setLocation(String location) {
+        this.location = location;
+    }
+
+    public boolean isAvailable() {
+        return isAvailable;
+    }
+    public void setAvailable(boolean available) {
+        isAvailable = available;
+    }
+
+    public void checkOut() {
+        this.isAvailable = false;
+    }
+
+    public void checkIn() {
+        this.isAvailable = true;
+
+    } 
+    public String getIsbn() {
+        return isbn;
+    }
+    public void setIsbn(String isbn) {
+        this.isbn = isbn;
+    }
+
+
+    
+
+
+    
+
+    
+
+}
+
+
diff --git a/src/main/java/com/zipcodewilmington/centrallibrary/MainApplication.java b/src/main/java/com/zipcodewilmington/centrallibrary/MainApplication.java
index c914d10..d8e8bed 100644
--- a/src/main/java/com/zipcodewilmington/centrallibrary/MainApplication.java
+++ b/src/main/java/com/zipcodewilmington/centrallibrary/MainApplication.java
@@ -1,4 +1,4 @@
-package com.zipcodewilmington.centralibrary;
+package com.zipcodewilmington.centrallibrary;
 
 /**
  * Created by n3pjk on 6/9/2025.
diff --git a/src/test/Reservable.java b/src/test/Reservable.java
new file mode 100644
index 0000000..d8fd84a
--- /dev/null
+++ b/src/test/Reservable.java
@@ -0,0 +1,11 @@
+package library;
+
+class LibraryMember {
+
+}
+public interface Reservable {
+    void reserve(LibraryMember member);
+    void cancelReserve(LibraryMember member);
+    boolean isReserved();
+
+}
diff --git a/src/test/Searchable.java b/src/test/Searchable.java
new file mode 100644
index 0000000..0433ff5
--- /dev/null
+++ b/src/test/Searchable.java
@@ -0,0 +1,5 @@
+public interface Searchable {
+    boolean matchesKeyword(String keyword);
+        String[] getSearchableFields();
+    }
+
diff --git a/src/test/java/com/zipcodewilmington/centrallibrary/Address.java b/src/test/java/com/zipcodewilmington/centrallibrary/Address.java
new file mode 100644
index 0000000..c15725e
--- /dev/null
+++ b/src/test/java/com/zipcodewilmington/centrallibrary/Address.java
@@ -0,0 +1,32 @@
+package com.zipcodewilmington.centrallibrary;
+
+
+
+public class Address{
+    private String street;
+    private String city;
+    private String state;
+    private String zipcode;
+
+    public Address(String street, String city, String state, String zipcode) {
+        this.street = street;
+        this.city = city;
+        this.state = state;
+        this.zipcode = zipcode;
+    }
+
+    public String getStreet() {return street; }
+    public String getCity() {return city; }
+    public String getState() {return state; }
+    public String getZipcode() {return zipcode; }
+
+    public void SetStreet(String street) {this.street = state; }
+    public void SetCity(String city) {this.city = city; }
+    public void SetState(String state) {this.state = state; }
+    public void SetZipcode(String zipCode) {this.zipcode = zipCode; }
+
+    @Override
+    public String toString() {
+        return street + ", " + city + ", " + state + ", " + zipcode; 
+    }
+}
\ No newline at end of file
diff --git a/src/test/java/com/zipcodewilmington/centrallibrary/AddressTest.java b/src/test/java/com/zipcodewilmington/centrallibrary/AddressTest.java
new file mode 100644
index 0000000..1a48f82
--- /dev/null
+++ b/src/test/java/com/zipcodewilmington/centrallibrary/AddressTest.java
@@ -0,0 +1,25 @@
+package com.zipcodewilmington.centrallibrary;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class AddressTest {
+    
+    @Test
+    public void testAddressConstructorAndGetters() {
+        // given
+        String street = "123 North St.";
+        String city = "Narnia";
+        String state = "Fairytaleland";
+        String zipcode = "12345";
+
+        // when
+        Address address = new Address (street, city, state,zipcode);
+
+        Assert.assertEquals(street, address.getStreet());
+        Assert.assertEquals(city, address.getCity());
+        Assert.assertEquals(state, address.getState());
+        Assert.assertEquals(zipcode, address.getZipcode());
+    }
+
+}
diff --git a/src/test/java/com/zipcodewilmington/centrallibrary/Library.java b/src/test/java/com/zipcodewilmington/centrallibrary/Library.java
new file mode 100644
index 0000000..f207cb4
--- /dev/null
+++ b/src/test/java/com/zipcodewilmington/centrallibrary/Library.java
@@ -0,0 +1,16 @@
+package com.zipcodewilmington.centrallibrary;
+
+import java.util.Scanner;
+
+public class Library {
+    
+    public static String name(String libraryNameString) {
+        Scanner scanner = new Scanner(System.in);
+        System.out.println(libraryNameString);
+        String userInput = scanner.nextLine();
+        return userInput;
+    }
+
+    
+
+}
diff --git a/src/test/java/com/zipcodewilmington/centrallibrary/LibraryMember b/src/test/java/com/zipcodewilmington/centrallibrary/LibraryMember
new file mode 100644
index 0000000..e69de29
diff --git a/src/test/java/com/zipcodewilmington/centrallibrary/MainApplicationTest.java b/src/test/java/com/zipcodewilmington/centrallibrary/MainApplicationTest.java
index f706f32..daa47d7 100644
--- a/src/test/java/com/zipcodewilmington/centrallibrary/MainApplicationTest.java
+++ b/src/test/java/com/zipcodewilmington/centrallibrary/MainApplicationTest.java
@@ -1,7 +1,9 @@
-package com.zipcodewilmington.centralibrary;
+package com.zipcodewilmington.centrallibrary;
 
 /**
  * Created by n3pjk on 6/9/2025.
  */
 public class MainApplicationTest {
+
+
 }
diff --git a/src/test/java/com/zipcodewilmington/centrallibrary/Person.java b/src/test/java/com/zipcodewilmington/centrallibrary/Person.java
new file mode 100644
index 0000000..5018f75
--- /dev/null
+++ b/src/test/java/com/zipcodewilmington/centrallibrary/Person.java
@@ -0,0 +1,37 @@
+
+package com.zipcodewilmington.centrallibrary;
+
+public final class Person {
+    private String name;
+    private String phoneNumber;
+    private int age;
+    private String email;
+
+    public Person(String name, int age, String email, String phoneNumber) {
+        this.name = name;
+        this.phoneNumber = phoneNumber;
+        setAge(age);
+        this.email = email;
+    }
+
+    public String getName() {return name; }
+    
+    public String getPhoneNumber() {return phoneNumber; }
+    public int getAge() {return age; }
+    public String getEmail() {return email;}
+
+    public void setName(String name) {this.name = name; }
+
+    public void setPhoneNumber(String phoneNumber) {this.phoneNumber = phoneNumber; }
+    public void setAge(int age) {
+        if (age < 0) throw new IllegalArgumentException("Age cannot be negative.");
+        this.age = age; 
+    }
+    public void setEmail(String email) {this.email = email; }
+
+    @Override
+    public String toString() {
+        return name + ", " + phoneNumber + ", " + age + ", " + email; 
+    }
+}
+
diff --git a/src/test/java/com/zipcodewilmington/centrallibrary/PersonTest.java b/src/test/java/com/zipcodewilmington/centrallibrary/PersonTest.java
new file mode 100644
index 0000000..a9eb483
--- /dev/null
+++ b/src/test/java/com/zipcodewilmington/centrallibrary/PersonTest.java
@@ -0,0 +1,34 @@
+package com.zipcodewilmington.centrallibrary;
+
+
+import org.junit.Test;
+import org.junit.Assert;
+
+
+public class PersonTest {
+
+    @Test
+    public void testPersonConstructorAndGetters() {
+        // given
+        String name = "Joe";
+        String phoneNumber = "302-555-1111";
+        String email = "joeschmo@gmail.com";
+        int age = 30;
+
+        // when
+        Person person = new Person (name, age, email, phoneNumber);
+
+        Assert.assertEquals(name, person.getName());
+        Assert.assertEquals(phoneNumber, person.getPhoneNumber());
+        Assert.assertEquals(email, person.getEmail());
+        Assert.assertEquals(age, person.getAge());
+    }
+    @Test
+    public void testSetAge_negativeAge_throwsException() {
+        Person person = new Person("Joe", 30, "joeschmo@gmail.com", "123-456-7890");
+
+        Assert.assertThrows(IllegalArgumentException.class, () -> {
+            person.setAge(-1);
+        });
+    }
+}
diff --git a/src/test/java/person.java b/src/test/java/person.java
new file mode 100644
index 0000000..a6304f4
--- /dev/null
+++ b/src/test/java/person.java
@@ -0,0 +1,45 @@
+
+public class person {
+    private String name;
+    private String email;
+    private String phoneNumber;
+    private int age;
+    //constructor initialized variable instances that belong to the person class
+
+    public person(String name, String email, String phoneNumber, int age) {
+        this.name = name;
+        this.email = email;
+        this.phoneNumber = phoneNumber;
+        this.age = age;
+    }
+    //getters and setters for the person class
+    public String getName() {
+        return name;
+    }
+    public int getAge() {
+        return age;
+    }
+    public String getEmail() {
+        return email;
+    }
+    public String getPhoneNumber() {
+        return phoneNumber;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+    public void setEmail(String email) {
+        this.email = email;
+    }
+    public void setPhoneNumber(String phoneNumber) {
+        if (phoneNumber == null || phoneNumber.trim().isEmpty()) {
+            throw new IllegalArgumentException("Phone number cannot be null or empty");
+        }
+        this.phoneNumber = phoneNumber;
+}
+@Override
+    public String toString() {
+        return "person{" +  "name='" + name + '\'' + ", email='" + email + '\'' +  ", phoneNumber='" + phoneNumber + '\'' + ", age=" + age +'}';
+    }
+}
\ No newline at end of file