login Code

package fr.lsquad;

import java.awt.Component;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;


public class Login_Syst extends javax.swing.JFrame {

    private Component jLabel1;
    private JLabel jLabel2;
    private JTextField jTextField1;
    private JLabel jLabel3;
    private JTextField jTextField2;
    private JButton jButton1;



    public Login_Syst() {
        initComponents();
    }

    private void initComponents() {

        jLabel1 = new javax.swing.JLabel("LOGIN");
        jLabel2 = new javax.swing.JLabel();
        jTextField1 = new javax.swing.JTextField();
        jLabel3 = new javax.swing.JLabel();
        jTextField2 = new javax.swing.JTextField();
        jButton1 = new javax.swing.JButton();

        setTitle("LOGIN SMOKER");
        setName("LOGIN");
        setResizable(false);

        jLabel1.setFont(new java.awt.Font("Arial Black", 1, 24));

        jLabel2.setFont(new java.awt.Font("Arial Black", 1, 14));
        jLabel2.setText("Username :");

        jLabel3.setFont(new java.awt.Font("Arial Black", 1, 14));
        jLabel3.setText("Password :");

        jButton1.setFont(new java.awt.Font("Arial Black", 0, 12));
        jButton1.setText("login");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                try {
                    jButton1ActionPerformed(evt);
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        });

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGroup(layout.createSequentialGroup().addGap(39, 39, 39).addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 296, javax.swing.GroupLayout.PREFERRED_SIZE).addGroup(layout.createSequentialGroup().addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false).addComponent(jLabel3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE).addComponent(jLabel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)).addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED).addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 121, javax.swing.GroupLayout.PREFERRED_SIZE).addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false).addComponent(jTextField1).addComponent(jTextField2, javax.swing.GroupLayout.DEFAULT_SIZE, 189, Short.MAX_VALUE))))).addContainerGap(47, Short.MAX_VALUE)));
        layout.setVerticalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGroup(layout.createSequentialGroup().addGap(6, 6, 6).addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 60, javax.swing.GroupLayout.PREFERRED_SIZE).addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED).addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE).addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 24, javax.swing.GroupLayout.PREFERRED_SIZE).addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)).addGap(18, 18, 18).addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE).addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 27, javax.swing.GroupLayout.PREFERRED_SIZE).addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)).addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED).addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 49, javax.swing.GroupLayout.PREFERRED_SIZE).addContainerGap(20, Short.MAX_VALUE)));
        pack();
    }

    public static void main(final String[] args) {
        try {
            for (final UIManager.LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) {
                if ("Windows".equals(info.getName())) {
                    UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        }
        catch (ClassNotFoundException ex) {
            Logger.getLogger(GuiFrame.class.getName()).log(Level.SEVERE, null, ex);
        }
        catch (InstantiationException ex2) {
            Logger.getLogger(GuiFrame.class.getName()).log(Level.SEVERE, null, ex2);
        }
        catch (IllegalAccessException ex3) {
            Logger.getLogger(GuiFrame.class.getName()).log(Level.SEVERE, null, ex3);
        }
        catch (UnsupportedLookAndFeelException ex4) {
            Logger.getLogger(GuiFrame.class.getName()).log(Level.SEVERE, null, ex4);
        }
        java.awt.EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                new Login_Syst().setVisible(true);
            }
        });
    }

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) throws  IOException{
           if(login(jTextField1.getText(), jTextField2.getText())){
           new GuiFrame().setVisible(true);
           setVisible(false);
           }else  {
               jTextField1.setText(null);
               jTextField2.setText(null);
               JOptionPane.showMessageDialog(rootPane, "ERROR LOGIN");
           }
          }



     public static boolean login (String email,String password)throws MalformedURLException ,IOException {

         URL u = new URL ("https://pastebin.com/raw/RqBzznGe");
         BufferedReader br = new BufferedReader(new InputStreamReader(u.openStream()));
         String line = br.readLine();
         while(line != null){
             String data [] = line.split("::");
             String e = data[0];
             String p = data[1];
             if(e.equalsIgnoreCase(email) && p.equalsIgnoreCase(password)){
                 return true;
             }
             else {
                 return false;
             }
         }
        return false;

     }
}