diff --git a/Answers/Admin.java b/Answers/Admin.java
new file mode 100644
index 0000000..dd3f104
--- /dev/null
+++ b/Answers/Admin.java
@@ -0,0 +1,94 @@
+import java.util.Objects;
+import java.util.Scanner;
+
+public class Admin implements C {
+    public Admin(){
+    }
+
+
+
+
+
+    public void Ad() {
+        Scanner input = new Scanner(System.in);
+        System.out.println("please enter the password: ");
+        int i = 3;
+        while(true) {
+            String s = input.nextLine();
+            if (Objects.equals(s, "abc123")) break;
+
+            else{
+                System.out.println("you entered wrong password!");}
+
+        }
+        try {
+            System.out.println("please enter one option" + "\n" + "1-add new member" + "\n" + "2-remove member" + "\n" + "for choosing option you need to write something like this : (lib add member) ");
+            String a = input.nextLine();
+            if (Objects.equals(a, "lib remove member")) {
+                System.out.println("please enter the member ID");
+                String R = input.nextLine();
+                remove_member(R);
+
+            }
+            if (Objects.equals(a, "lib add member")) {
+                System.out.println("please enter the Student ID and Password");
+                String P = input.nextLine();
+                String S = input.nextLine();
+                add_member(S, P);
+            }
+        }catch(Exception e) {
+            System.out.println("Something went wrong");
+        }
+
+
+
+    }
+
+    @Override
+    public void add_book(String name, String author, String subtitle) {
+
+    }
+
+    @Override
+    public void get_hrs() {
+
+    }
+
+    @Override
+    public void rent(String book_name) {
+
+    }
+
+    @Override
+    public void add_member(String std_id, String password) {
+        while(true){
+            Scanner input  = new Scanner(System.in);
+            password = input.nextLine();
+            if(Objects.equals(password, "abc123"))break;
+            else System.out.println("password is wrong");
+        }
+
+
+
+    }
+
+    @Override
+    public void rent(String book_name, String member_name, String member_id) {
+
+    }
+
+    @Override
+    public void available_book() {
+
+    }
+
+    @Override
+    public void remove_member(String member_id) {
+
+    }
+
+    @Override
+    public void return_book(String book_name) {
+
+    }
+}
diff --git a/Answers/Book.java b/Answers/Book.java
new file mode 100644
index 0000000..ae5aa0f
--- /dev/null
+++ b/Answers/Book.java
@@ -0,0 +1,3 @@
+public class Book {
+
+}
diff --git a/Answers/C.java b/Answers/C.java
new file mode 100644
index 0000000..f634263
--- /dev/null
+++ b/Answers/C.java
@@ -0,0 +1,10 @@
+public interface C {
+    void add_book(String name , String author , String subtitle);
+    void get_hrs();
+    void rent(String book_name);
+    void add_member(String std_id , String password);
+    void rent (String book_name , String member_name , String member_id);
+    void available_book();
+    void remove_member(String member_id);
+    void return_book(String book_name);
+}
diff --git a/Answers/Library.java b/Answers/Library.java
new file mode 100644
index 0000000..9c0787e
--- /dev/null
+++ b/Answers/Library.java
@@ -0,0 +1,4 @@
+public class Library {
+
+
+}
diff --git a/Answers/MyApp.java b/Answers/MyApp.java
new file mode 100644
index 0000000..423df5c
--- /dev/null
+++ b/Answers/MyApp.java
@@ -0,0 +1,39 @@
+import java.util.Objects;
+import java.util.Scanner;
+import java.util.regex.Pattern;
+
+public class MyApp {
+    public static void main(String[] args) {
+        String x;
+        Admin admin  = new Admin();
+        NormalUser user  = new NormalUser();
+            Scanner input = new Scanner(System.in);
+            System.out.println("log in as Admin : 1" + "\n" + "log in as user : 2");
+            x = input.nextLine();
+            // || Pattern.matches("[9][0-9]{9}", phone)
+            while (true) {
+
+
+
+                if(Pattern.matches("[12]{1}" , x)){
+                    if(Objects.equals(x, "1")){
+                        admin.Ad();
+                    }
+                    if(Objects.equals(x, "2")){
+                        user.sing();
+                    }
+                }
+                else{
+                    System.out.println("wrong try again: ");
+                    x = input.nextLine();
+                }
+
+
+
+
+
+            }
+
+    }
+}
+
diff --git a/Answers/NormalUser.java b/Answers/NormalUser.java
new file mode 100644
index 0000000..5dba80c
--- /dev/null
+++ b/Answers/NormalUser.java
@@ -0,0 +1,182 @@
+import jdk.management.jfr.FlightRecorderMXBean;
+
+import javax.swing.*;
+import java.util.Objects;
+import java.util.Random;
+import java.util.Scanner;
+import java.util.regex.Pattern;
+
+import static java.util.regex.Pattern.matches;
+
+public class NormalUser implements C {
+    public String[]Name = new String[20];
+    public String[]User_ID = new String[20];
+    public String[]phone_number = new String[20];
+    public NormalUser() {
+    }
+
+    public void sing() {
+        System.out.println("Welcome to our library");
+        System.out.println("for sign in please enter: 1" + "\n" + "for sign up please enter : 2");
+        Scanner input = new Scanner(System.in);
+        String AA = input.nextLine();
+        while (true) {
+            if (Objects.equals(AA, "1")) {
+                Check();
+                break;
+            }
+            if (Objects.equals(AA, "2"))
+                signup();
+            else {
+                System.out.println("Wrong+");
+                AA = input.nextLine();
+            }
+        }
+    }
+
+    public void signup() {
+        String phone;
+        Random random = new Random();
+        System.out.println("please enter your name and phone number");
+        Scanner input = new Scanner(System.in);
+        System.out.println("name:");
+        String name = input.nextLine();
+        System.out.println("phone number:");
+        phone = input.nextLine();
+        while (true) {
+
+            if (Pattern.matches("[0][0-9]{10}", phone)) {
+                break;
+            } else {
+                System.out.println("wrong phone number please try again");
+                phone = input.nextLine();
+            }
+        }
+
+        int ID = random.nextInt(1000);
+        String id = String.valueOf(ID);
+        User user = new User();
+        user.save(name, phone, id);
+    }
+
+    public void Check() {
+        int o = 0;
+        User user = new User();
+
+        System.out.println("please enter your ID");
+        Scanner input = new Scanner(System.in);
+        String ID = input.nextLine();
+                    while(true) {
+                        for (int k = 1; k < User_ID.length; k++) {
+                            if (Objects.equals(User_ID[k], ID)) {
+                                o = 1;
+                                System.out.format("name :%s \nID :%s \nphone number:%s\n", Name[k], User_ID[k], phone_number[k]);
+                                break;
+                            }
+                        }
+                        if(o==1)break;
+                        else{
+                            System.out.println("wrrrrrong");
+                            ID = input.nextLine();
+                        }
+                    }
+
+
+                    signin();
+
+
+    }
+
+
+
+    public void signin() {
+
+
+            Scanner input = new Scanner(System.in);
+            System.out.println("please enter one option" + "\n" + "1-add book" + "\n" + "2-get hrs" + "\n" + "3-rent" + "\n" + "4-Rent(for specific member) " + "\n" + "5-get available books" + "\n" + "6-return" + "\n" + "for choosing option you have to write something like this : (lib rent)");
+            String A = input.nextLine();
+        while (true) {
+
+
+            if (Objects.equals(A, "lib add book")) {
+                System.out.println("please enter name,author and subtitle");
+                String N = input.nextLine();
+                String Author = input.nextLine();
+                String S = input.nextLine();
+                add_book(N, Author, S);
+            }
+            if (Objects.equals(A, "lib get hrs")) {
+                get_hrs();
+            }
+            if (Objects.equals(A, "lib rent")) {
+                System.out.println("please enter the book_name");
+                String BN = input.nextLine();
+                rent(BN);
+            }
+            if (Objects.equals(A, "lib Rent")) {
+                System.out.println("please enter the BookName,MemberName and MemberID");
+                String BN = input.nextLine();
+                String MN = input.nextLine();
+                String MID = input.nextLine();
+                rent(BN, MN, MID);
+            }
+            if (Objects.equals(A, "lib get available books")) {
+                available_book();
+            }
+            if (Objects.equals(A, "lib return")) {
+                System.out.println("please enter BookName");
+                String BN = input.nextLine();
+                return_book(BN);
+            } else {
+                System.out.println("wrong+++");
+                A = input.nextLine();
+
+            }
+        }
+        }
+
+
+
+    @Override
+    public void add_book(String name, String author, String subtitle) {
+
+    }
+
+    @Override
+    public void get_hrs() {
+        System.out.println("8AM - 5PM");
+        System.out.println("\n");
+        signin();
+
+    }
+
+    @Override
+    public void rent(String book_name) {
+
+    }
+
+    @Override
+    public void add_member(String std_id, String password) {
+
+    }
+
+    @Override
+    public void rent(String book_name, String member_name, String member_id) {
+
+    }
+
+    @Override
+    public void available_book() {
+
+    }
+
+    @Override
+    public void remove_member(String member_id) {
+
+    }
+
+    @Override
+    public void return_book(String book_name) {
+
+    }
+}
diff --git a/Answers/Rent.java b/Answers/Rent.java
new file mode 100644
index 0000000..7d8502d
--- /dev/null
+++ b/Answers/Rent.java
@@ -0,0 +1,2 @@
+public class Rent {
+}
diff --git a/Answers/User.java b/Answers/User.java
new file mode 100644
index 0000000..b379ed6
--- /dev/null
+++ b/Answers/User.java
@@ -0,0 +1,31 @@
+import com.sun.source.tree.NewArrayTree;
+
+import java.time.LocalDate;
+
+public class User {
+    NormalUser normalUser = new NormalUser();
+
+    int i = 1;
+    public User(){
+
+
+    }
+
+    public void save(String name , String phone , String ID ) {
+        while(true) {
+            normalUser.Name[i] = name;
+            normalUser.phone_number[i] = phone;
+            normalUser.User_ID[i] = ID;
+            System.out.format("user %d \nname : %s \nphone number : %s \nid: %s \n", i, normalUser.Name[i], normalUser.phone_number[i], normalUser.User_ID[i]);
+            LocalDate time =LocalDate.now();
+            System.out.println("you have been signed up at" + " " + time + "\n" );
+            i++;
+            break;
+        }
+
+        normalUser.Check();
+    }
+
+
+
+}