yasar_yagi_FavoriteMovies/LoginFrame.java

import java.awt.BorderLayout;
import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import java.awt.SystemColor;
import java.awt.Color;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JCheckBox;
import javax.swing.JButton;
import java.awt.Font;
import java.awt.Image;

import javax.swing.JTextField;
import javax.swing.JPasswordField;
import javax.swing.ImageIcon;
import javax.swing.UIManager;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
import java.awt.event.ActionEvent;

public class LoginFrame extends JFrame {

	private JPanel contentPane;
	//private Image img_logo = new ImageIcon(LoginFrame.class.getResource("C:\\\\Users\\\\skc\\\\Pictures\\\\Top-best-Android-Apps-to-watch-and-stream-free-movies-online.jpg")).getImage().getScaledInstance(90, 90,Image.SCALE_SMOOTH);
	private JTextField tf_login;
	
	boolean found=false;
	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					LoginFrame frame = new LoginFrame();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public LoginFrame() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 406, 435);
		contentPane = new JPanel();
		contentPane.setBackground(new Color(0, 0, 51));
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JPanel panel = new JPanel();
		panel.setBackground(new Color(0, 0, 51));
		panel.setBounds(30, 41, 329, 295);
		contentPane.add(panel);
		panel.setLayout(null);
		
		JLabel lblNewLabel = new JLabel("Login Details");
		lblNewLabel.setFont(new Font("Tahoma", Font.BOLD, 24));
		lblNewLabel.setForeground(new Color(255, 255, 255));
		lblNewLabel.setBounds(72, 32, 233, 37);
		panel.add(lblNewLabel);
		
		JLabel lbl_username = new JLabel("Enter UserName:");
		lbl_username.setForeground(new Color(255, 255, 255));
		lbl_username.setFont(new Font("Tahoma", Font.BOLD, 16));
		lbl_username.setBounds(72, 131, 183, 37);
		panel.add(lbl_username);
		
		tf_login = new JTextField();
		tf_login.setBounds(72, 180, 170, 28);
		panel.add(tf_login);
		tf_login.setColumns(10);
		
		JButton btnLogin = new JButton("OK");
		btnLogin.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				String username= tf_login.getText();
				
				//file importing for login credentials Manager

				File filex=new File("C:\\Users\\skc\\eclipse-workspace\\first\\Favorite_Movies\\src\\files\\login_cred.txt");
				Scanner scan;

				try {
					scan = new Scanner(filex);

					scan.useDelimiter("[\n]");


					if(scan.hasNext() && !found ) {
						
						String line_ = scan.nextLine();
						
						if(line_.equals(username)) {
							
								found=true;
								if(found==true) {
									JOptionPane.showMessageDialog(null,"Login Successful");

									Main_HomePage mhp=new Main_HomePage();
									mhp.setVisible(true);
									if(mhp.isVisible()) {
										//use to display only one screen
									LoginFrame.this.dispose();
									}
									
								}
								else {
									JOptionPane.showMessageDialog(null,"Enter Valid UserName !");
									
								}
								
							}
						else
						{
							JOptionPane.showMessageDialog(null,"User Name not found !");
						}

					
					}
					else {
						JOptionPane.showMessageDialog(null,"Please Try Again !");
					}
					scan.close();
				} catch (FileNotFoundException e1) {
					// TODO Auto-generated catch block
					e1.printStackTrace();
				}
				
						
				/*Main_HomePage mhp=new Main_HomePage();
				mhp.setVisible(true);
				if(mhp.isVisible()) {
					//use to display only one screen
					LoginFrame.this.dispose();
				}*/
			}
		});
		btnLogin.setBackground(UIManager.getColor("Button.light"));
		btnLogin.setBounds(117, 233, 89, 23);
		panel.add(btnLogin);
		
		
	}
	
}