PasswordManagerData.java

import java.util.*;
class PasswordManagerData
{
    String Username;
    String Web_Data;
    String New_Website_Name;
    String Password_Data;
    String New_Password;
}
class PasswordManager extends PasswordManagerData
{
    void Get() 
	{
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter Website Name: ");
        Web_Data = sc.nextLine();
        boolean Valid_Password=false;
        do 
		{
            System.out.print("Enter Password: ");
            Password_Data = sc.nextLine();
            Valid_Password = true;
            if (Password_Data.length() < 8)
			{
                System.out.println("Your Password Must Have Atleast 8 Characters ");
                Valid_Password = false;
            }
            if (Password_Data.equals(Username)) 
			{
                System.out.println("Your Password Must Not Be Same As The User Name You Entered ");
                Valid_Password = false;
            }
            boolean UpperCase = false;
            boolean LowerCase = false;
            boolean Digits = false;
            for (int i = 0; i < Password_Data.length(); i++) 
			{
                char c = Password_Data.charAt(i);
                if (c >= 'A' && c <= 'Z') 
				{
                    UpperCase = true;
                }
                if (c >= 'a' && c <= 'z')
				{
                    LowerCase = true;
                }
                if (c >= '0' && c <= '9') 
				{
                    Digits = true;
                }
            }
            if (!UpperCase) 
			{
                System.out.println("Your Password Must Have Atleast 1 Capital Letter");
                Valid_Password = false;
            }
            if (!LowerCase) 
			{
                System.out.println("Your Password Must Have Atleast 1 Small Letter");
                Valid_Password = false;
            }
            if (!Digits) 
			{
                System.out.println("Your Password Must Have Atleast one Integral Number");
                Valid_Password = false;
            }
        } while (!Valid_Password);
    }
    void CheckPassword(String s) 
	{
        Scanner sc = new Scanner(System.in);
        boolean flag = true;
        while (flag)
		{
            System.out.print("Enter Your Email ID's Password to Access Your Saved Passwords : ");
            String x = sc.nextLine();
            if (x.equals(s)) 
			{
                flag = false;
            } else 
			{
                System.out.println("Enter Correct Password ");
            }
        }
    }
    int Search(PasswordManager[] a) 
	{
        Scanner sc = new Scanner(System.in);
        for (int i = 0; i < a.length; i++) 
		{
            System.out.println((i + 1) + " " + a[i].Web_Data);
        }
        System.out.print("Enter the Number of Corresponding To Your Desired Website : ");
        return sc.nextInt();
    }
    void Display(int n, PasswordManager[] a) 
	{
        System.out.println("Website : " + a[n - 1].Web_Data);
        System.out.println("Password : " + a[n - 1].Password_Data);
    }
    void Display_Array(PasswordManager[] a)
	{
        for (int i = 0; i < a.length; i++) 
		{
            System.out.println("Website : " + a[i].Web_Data);
            System.out.println("Password : " + a[i].Password_Data);
        }
    }
    void EditPassword(PasswordManager[] a) 
	{
        Scanner sc = new Scanner(System.in);
        for (int i = 0; i < a.length; i++) 
		{
            System.out.println((i + 1) + ". " + a[i].Web_Data);
        }
        System.out.print("Enter the Index Shown Above which you desire to change : ");
        int n = sc.nextInt();
        boolean flag = true;
        while (flag) 
		{
            System.out.print("Enter your Old Password : ");
            String Old_Password = sc.nextLine();
            if (a[n - 1].Password_Data.equals(Old_Password)) 
			{
                System.out.print("Enter the New Password : ");
                New_Password = sc.nextLine();
                flag = false;
            }
            else 
			{
                System.out.println("Incorrect Password");
            }
        }
        a[n - 1].Password_Data = New_Password;
        System.out.println("Password Updated Successfully ");
        System.out.println("Website : "+a[n-1].Web_Data);
        System.out.println("Updated Password : " + a[n - 1].Password_Data);
    }
    PasswordManager[] Delete(PasswordManager[] PM) 
	{
        Scanner sc = new Scanner(System.in);
        for (int i = 0; i < PM.length; i++) 
		{
            System.out.println((i + 1) + ". " + PM[i].Web_Data);
        }
        System.out.print("Enter the index number of the website whose password you want to delete : ");
        int n = sc.nextInt();
        if (n < 1 || n > PM.length) 
		{
            System.out.println("Invalid index number entered!");
            return PM;
        }
        PasswordManager[] newPM = new PasswordManager[PM.length - 1];
        int j = 0;
        for (int i = 0; i < PM.length; i++)
		{
            if ((n - 1) != i)
			{
                newPM[j] = PM[i];
                j++;
            }
        }
        System.out.println("Website password deleted successfully!");
        return newPM;
    }
    PasswordManager[] AddPasswords(PasswordManager[] a) 
	{
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter The Number of Passwords to Add in Your Database : ");
        int New_Array_Length = sc.nextInt();
        PasswordManager[] a1 = new PasswordManager[a.length + New_Array_Length];
        for (int i = a.length; i < a1.length; i++) 
		{
            a1[i] = new PasswordManager();
            a1[i].Get();
        }
        for(int i=0;i<a.length;i++)
		{
            a1[i]=a[i];
        }
        System.out.println("Password added successfully ");
        return a1;
    }
    void EditWebsiteName(PasswordManager[] a)
	{
        Scanner sc = new Scanner(System.in);
        for (int i = 0; i < a.length; i++) 
		{
            System.out.println((i + 1) + ". " + a[i].Web_Data);
        }
        System.out.print("Enter the Index Shown Above which you desire to change : ");
        int n = sc.nextInt();
        sc.nextLine();
        if (n >= 1 && n <= a.length) 
		{
            System.out.println("Current Website Name is "+a[n-1].Web_Data);
            System.out.print("Enter The New Website Name : ");
            New_Website_Name=sc.nextLine();
            a[n-1].Web_Data = New_Website_Name;
            System.out.println("Website Name Changed Successfully ");
        } 
		else 
		{
            System.out.println("Invalid index entered.");
        }
    }
}
class Run 
{
	static 
	{
        System.out.println("-------------------Personalized Access Control for Passwords---------------------");
        System.out.println("                    Welcome to Your Personal Password Manager                    ");
    }
	public static void main(String[] args) 
	{
        String EPassword;
        Scanner sc = new Scanner(System.in);
        System.out.println();
        System.out.println();
        PasswordManager a = new PasswordManager();
        System.out.print("Enter Your E-Mail ID : ");
        String EMail = sc.nextLine();
        System.out.print("Enter Your Username : ");
        a.Username=sc.nextLine();
        System.out.print("Enter Your E-Mail ID's Password : ");
        EPassword = sc.nextLine();
        System.out.print("Enter The Number of Website Whose Passwords You Want to Manage : ");
        int Array_Length = sc.nextInt();
        PasswordManager[] PM = new PasswordManager[Array_Length];
        for (int i = 0; i < PM.length; i++) 
		{
            PM[i] = new PasswordManager();
            PM[i].Get();
        }
        int Operations = 0;
        char ch = 'y';
        while (ch == 'y' || ch == 'Y') 
		{
            System.out.println("Enter The Number Displayed Below Corresponding to Your Desired Operation  ");
            System.out.println("1. Add More Passwords ");
            System.out.println("2. Edit The Existing Passwords ");
            System.out.println("3. Delete The Existing Passwords ");
            System.out.println("4. To Search For The Specific Website's Password");
            System.out.println("5. Display the Existing Passwords");
            System.out.println("6. Exit");
            Operations = sc.nextInt();
            switch (Operations) 
			{
                case 1:
                a.CheckPassword(EPassword);
                PM=a.AddPasswords(PM);
                break;
                case 2:
                System.out.println("Enter W for Website , P for Password Edit and B for Both ");
                System.out.print("Do You Want To Edit Website's Name or Password or Both : ");
                char ch1=sc.next().charAt(0);
                if(ch1=='W'||ch1=='w') 
				{
                    a.CheckPassword(EPassword);
                    a.EditWebsiteName(PM);
                }
                if(ch1=='P'||ch1=='p') 
				{
                    a.CheckPassword(EPassword);
                    a.EditPassword(PM);
                }
                if(ch1=='B'||ch1=='b')
				{
                    a.CheckPassword(EPassword);
                    a.EditWebsiteName(PM);
                    a.EditPassword(PM);
                }
                else
				{
                    System.out.println("Please Enter a Correct Response ");
                }
                break;
                case 3:
                a.CheckPassword(EPassword);
                PM = a.Delete(PM);
                break;
				case 4:
                a.CheckPassword(EPassword);
                a.Display(a.Search(PM), PM);
                break;
                case 5:
                a.CheckPassword(EPassword);
                a.Display_Array(PM);
                break;
                case 6:
                System.out.println("Thanks for Visiting");
                System.exit(0);
                default:
                System.out.println("Invalid Number Entered. Please try again.");
            }
		}
	}
}