/*IMPORTANT:This program runs only if you have local disk named D.

If not replace D with any other local disk name except C

*/

package diary;

import java.awt.*;

import java.awt.event.*;

import java.io.*;

import java.util.*;

import javax.swing.*;

/**

*Project name: Personal Diary

*Reason : OOPS assignment

*Features: User-defined Encryption and Decryption

*Security:Password Protection

* Author: Hayanesh

*/

public class Diary extends Notepad implements ActionListener {

JFrame create,enter,reset,text_editor,frame;

JFrame controllingFrame;

JLabel name_create,pass_create,confir_create,diary_wel;

JLabel name_enter,pass_enter,label,wel_label;

JButton ok_create,cancel_create,button,okButton,resetButton;

JButton ok_enter,reset_enter,wel_enter;

JTextArea t1_create;

JPasswordField t2_create,t3_create;

JPanel messagePane,buttonPane,p,dia1,dia2;

JPasswordField passwordField;

public Diary(){

//Creating Diary and Keys folder in D partion

File dir = new File(dir_diary);

dir.mkdir();

File dir2 = new File(dir_key);

dir2.mkdir();

//Frame1 contains two panels

create = new JFrame("Diary");

create.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

//Panel1

dia1= new JPanel();

diary_wel = new JLabel("Welcome to your Diary");

diary_wel.setForeground(Color.BLUE);

diary_wel.setFont(diary_wel.getFont().deriveFont(40.0f));

diary_wel.setSize(500,100);

wel_enter = new JButton("Enter");

wel_enter.addActionListener(this);

wel_label = new JLabel();

//Panel2

dia2= new JPanel();

name_create= new JLabel("User Name");

pass_create= new JLabel("New Password");

confir_create= new JLabel("Confirm Password");

t1_create = new JTextArea();

t1_create.setFont(t1_create.getFont().deriveFont(15.0f));

t2_create = new JPasswordField(10);

t3_create = new JPasswordField(10);

ok_create = new JButton("OK");

cancel_create = new JButton("Cancel");

cancel_create.addActionListener(this);

ok_create.addActionListener(this);

}

//Creating Frame1 to create account

public void launchframe1()

{

/*Re-Intialising the PasswordField

To clear the PasswordField,

when Frame1 is called through resetbutton of frame2

*/

t1_create.setText("");

t2_create.setText("");

t3_create.setText("");

//To hide the Create an Account label before Enterbutton is clicked

wel_label.setVisible(false);

wel_enter.setVisible(true);

//Adding components to Panel1

dia1.add(diary_wel);

dia1.add(wel_enter);

dia1.add(wel_label);

dia1.setVisible(true);

//Adding components to Panel2

dia2.setLayout(new GridLayout(4,2));

dia2.add(name_create);

dia2.add(t1_create);

dia2.add(pass_create);

dia2.add(t2_create);

dia2.add(confir_create);

dia2.add(t3_create);

dia2.add(ok_create);

dia2.add(cancel_create);

dia2.setVisible(false);

//Adding the Pannels to the Frame1

create.add(dia1);

create.add(dia2);

create.setVisible(true);

create.setLayout(new GridLayout(0,1));

create.setSize(500,250);

}

//Creating Frame2 to check the password

public void launchframe2() {

create.dispose();

frame = new JFrame("Password");

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

showframe2(frame);

Focus();

frame.pack();

frame.setVisible(true);

}

//Adding components to Frame2

public void showframe2(JFrame f)

{

//Fram2 contains two Panels

controllingFrame = f;

//Panel1

p = new JPanel();

p.setLayout(new GridLayout(0,1));

okButton = new JButton("OK");

resetButton = new JButton("Reset");

okButton.addActionListener(this);

resetButton.addActionListener(this);

p.add(okButton);

p.add(resetButton);

//Panel2

label = new JLabel("Enter the password: ");

label.setBounds(0,0,60,20);

passwordField = new JPasswordField(10);

JPanel textPane = new JPanel(new FlowLayout(FlowLayout.CENTER));

textPane.add(label);

textPane.add(passwordField);

//Adding panels to frame2

controllingFrame.setLayout(new FlowLayout(FlowLayout.TRAILING));

controllingFrame.add(textPane);

controllingFrame.add(p);

controllingFrame.setVisible(true);

}

//To make the passwordField active to enter password

public void Focus()

{

passwordField.requestFocusInWindow();

}

//Creating Frame3 *Notepad*

public void launchframe3()

{

new Notepad();

f.setVisible(true);

}

//Setting the action events for the corresponding buttons

public void actionPerformed(ActionEvent e)

{

if(e.getSource()==wel_enter)

{

dia2.setVisible(true);

wel_enter.setVisible(false);

wel_label.setText("Create an account");

wel_label.setFont(wel_label.getFont().deriveFont(20.0f));

wel_label.setVisible(true);

}

else if(e.getSource()==ok_create)

{

//>>String name = t1_create.getText();

char[] password = t2_create.getPassword();

char[] temp = t3_create.getPassword();

//Checking for password correctness

if(Arrays.equals(password, temp))

{

File pass;

pass = new File("D:/password.txt");

//Storing the password to the created file

try {

FileWriter wr = new FileWriter(pass);

wr.write(password);

wr.close();

} catch (IOException ex) {

}

launchframe2();

}

else

{

//Warning message for password mismatch

AboutDialog();

}

}

else if(e.getSource()==cancel_create)

{

create.dispose();

}

//Frame2 actions

else if (e.getSource()==okButton)

{

char[] input = passwordField.getPassword();

try {

if (isPasswordCorrect(input)) {

JOptionPane.showMessageDialog(controllingFrame,

"Welcome!! Click ok to open the Notepad");

frame.dispose();

launchframe3();

} else {

JOptionPane.showMessageDialog(controllingFrame,

"Invalid password. Try again.",

"Error Message",

JOptionPane.ERROR_MESSAGE);

}

} catch (FileNotFoundException ex) {}

}

else if(e.getSource()==resetButton)

{

char[] check = passwordField.getPassword();

try {

if (isPasswordCorrect(check)) {

JOptionPane.showMessageDialog(controllingFrame,

"Success! You typed the right password.");

frame.dispose();

File pass = new File("E:/password.txt");

PrintWriter writer = new PrintWriter(pass);

//To clear the old password

writer.print("");

writer.close();

launchframe1();

} else {

JOptionPane.showMessageDialog(controllingFrame,

"Enter the Old password in the password field and press reset");

}

} catch (FileNotFoundException ex) {}

}

//Frame3 Edit

else if(e.getSource()==cut)

ta.cut();

else if(e.getSource()==paste)

ta.paste();

else if(e.getSource()==copy)

ta.copy();

else if(e.getSource()==selectAll)

ta.selectAll();

//Frame3 File

else if(e.getSource()==open)

{openFile();}

else if(e.getSource()==save)

try {

saver();

} catch (IOException ex) {

}

//Frame3 process

else if(e.getSource()==encrypt)

{

try {

encrypter();

} catch (IOException ex) {

}

}

else if(e.getSource()==decrypt)

{

try {

decrypter();

} catch (FileNotFoundException ex) {

}

}

}

public void AboutDialog()

{

JOptionPane.showMessageDialog(create,

"Entered password do not match");

}

//Function to check the entered password with the stored password in password.txt

private static boolean isPasswordCorrect(char[] input) throws FileNotFoundException {

boolean isCorrect = true;

int count =0;

File pass = new File("D:/password.txt");

Scanner sc2 = new Scanner(pass);

while(sc2.hasNext())

{

count++;

sc2.next();

}

Scanner sc3 = new Scanner(pass);

char[] correctPassword= new char[count];

for(int i=0;i<count;i++)

correctPassword = (sc3.next()).toCharArray();

if (input.length != correctPassword.length) {

isCorrect = false;

} else {

isCorrect = Arrays.equals (input, correctPassword);

}

return isCorrect;

}

//MAIN METHOD

public static void main(String[] args) throws FileNotFoundException, IOException,NullPointerException{

Diary x = new Diary();

//Creating a file to save the user password

File myfile = new File("D:/Password.txt");

if(!myfile.exists())

myfile.createNewFile();

Scanner mp = new Scanner(myfile);

if(mp.hasNext())

{

x.launchframe2();

}

else

{

x.launchframe1();

}

}

}