code_4

package com.currencycal;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.lang.reflect.Array;
import java.util.Scanner;
import java.awt.*;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;

public class SignUp extends JFrame{


	private JButton createNow;
	private JPanel newUserPanel;
	private JTextField textUser;
	private JTextField passwordd;

	public SignUp()throws HeadlessException {

		//intilizing graphics
		createNow = new JButton("Create now");
		newUserPanel = new JPanel();
		textUser = new JTextField();
		passwordd = new JPasswordField();

		//making layout
		GridLayout grid = new GridLayout(6,1);
        setBounds(0, 0, 400, 400);
        setLayout(grid);

		//adding all on frame

        add(newUserPanel);

        add(new JLabel("New User Name : "));
        add(textUser);

        add(new JLabel("New password"));
        add(passwordd);

        add(createNow);

      //frame exits on close button
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

       getContentPane().add(newUserPanel);
       setVisible(true);

      // going back to login page
        createNow.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {

            	//byte dataUser[] = new byte[40];
            	//byte dataPass[] = new byte[40];


            	String dataUser = textUser.getText();
            	String dataPass = passwordd.getText();

            	//dataUser = user.getBytes();
            	//System.out.println(dataUser);
            	//dataPass = pass.getBytes();

            	File f = new File("newUser.txt");
            	if(!f.exists())
            	{
            		try {
						f.createNewFile();
					} catch (IOException e1) {
						// TODO Auto-generated catch block
						e1.printStackTrace();
					}
            	}
            	//FileOutputStream fs = null;
//				try {
//					fs = new FileOutputStream(f);
//				} catch (FileNotFoundException e1) {
//					// TODO Auto-generated catch block
//					e1.printStackTrace();
//				}

				FileWriter filewrite = null;
				try {
					filewrite = new FileWriter(f);
				} catch (IOException e2) {
					// TODO Auto-generated catch block
					e2.printStackTrace();
				}

            	try {

            		filewrite.write(dataUser+"-"+dataPass+"\n");
            		filewrite.close();
					//System.out.println(dataUser+"\r"+"\n"+dataPass);
				} catch (IOException e1) {
					// TODO Auto-generated catch block
					e1.printStackTrace();
				}

//            	String dataUser1 = null;
            	String dataPass1 = null;
            	//byte dataUser1[] = new byte[40];
            	Scanner S = null;
				try {
					S = new Scanner(f);
				} catch (FileNotFoundException e1) {
					// TODO Auto-generated catch block
					e1.printStackTrace();
				}
				String name1;
				String pass1;
            	while (S.hasNextLine()) {
                   dataPass1 = S.nextLine();

                   String[] parts = dataPass1.split("-", 2);
                    name1 = parts[0];
                    pass1 = parts[1];

                    System.out.println(name1);
                    System.out.println(pass1);


            	String name2 = "something";
				String pass2 = "1234567";

            	//comparing with previous record
            	if(dataUser.equals(name2) && dataPass.equals(pass2))
            	{
            		JOptionPane.showMessageDialog(null,"User Name Already exits");
            		name1 = "";
            		pass1 = "";
            	}
            	else if(dataUser.equals("")&& dataPass.equals(""))
            	{
            		JOptionPane.showMessageDialog(null,"Please insert UserName and Password");
            	}
            	else
            	{

						try {
							filewrite.write(dataUser+"-"+dataPass+"\n");
						} catch (IOException e1) {
							// TODO Auto-generated catch block
							e1.printStackTrace();
						}
						try {
							filewrite.close();
						} catch (IOException e1) {
							// TODO Auto-generated catch block
							e1.printStackTrace();
						}
						JOptionPane.showMessageDialog(null,"Account has been Created.");
            		    dispose();

            		  //graphic call
                    	new Login().show();
                    	setVisible(false);
                        dispose();




            }
            	}
            }        });
	}
}