HOME_PAGE.java

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package dbms;

import static java.lang.System.exit;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.Random;

/**
 *
 * @author Admin
 */
public class HOME_PAGE extends javax.swing.JFrame {
Random rand=new Random();
        final int rand1=rand.nextInt(10);
        final int rand2=rand.nextInt(10);

    final int answer=rand1+rand2;

    /**
     * Creates new form HOME_PAGE
     */
    public HOME_PAGE() {
        initComponents();
         this.setSize(2000, 1000);
        this.setVisible(true);
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        jLabel1 = new javax.swing.JLabel();
        jButton1 = new javax.swing.JButton();
        jTextField1 = new javax.swing.JTextField();
        jPasswordField1 = new javax.swing.JPasswordField();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        getContentPane().setLayout(null);

        jLabel1.setIcon(new javax.swing.ImageIcon("C:\\Users\\Admin\\Desktop\\seas ict\\Semester 4\\DBMS\\SCREENSHOT\\UNDERSTANDING ORGAN TRANSPLANT.png")); // NOI18N
        getContentPane().add(jLabel1);
        jLabel1.setBounds(0, 0, 2000, 1000);

        jButton1.setText("LOGIN");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });
        getContentPane().add(jButton1);
        jButton1.setBounds(930, 610, 67, 25);
        getContentPane().add(jTextField1);
        jTextField1.setBounds(910, 440, 110, 22);
        getContentPane().add(jPasswordField1);
        jPasswordField1.setBounds(910, 490, 110, 22);

        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
      String username_entered=jTextField1.getText();
       char[] password1=jPasswordField1.getPassword();
        String password_entered=new String(password1);
        
        
        
        if(!username_entered.equals("") & !password_entered.equals("")){
            
            
            
            
        Connection conn = null;
        try{
            String driverName = "oracle.jdbc.OracleDriver";
            Class.forName(driverName);
            String serverName = "LAPTOP-CAL2CB75";
            String serverPort = "1522";
            String sid = "XE";
            String url = "jdbc:oracle:thin:@" + serverName +":" + serverPort + ":" + sid;
            String username = "VARSHIL";
            String password = "admin";
            conn = DriverManager.getConnection(url, username, password);
            System.out.println("Successful login");
        }catch(Exception e){
           System.out.println("Exception caught --> " + e); 
        }
        int count=0;
        try{
            Statement st = conn.createStatement();
            ResultSet rs = st.executeQuery("Select * from login");
            while(rs.next()){
                String user_id = rs.getString(1);
                String pass= rs.getString(2);
                System.out.println("user: "+user_id+" password: "+pass);
                if(username_entered.equals(user_id) & password_entered.equals(pass)){
                    System.out.println("Successful login");
                    count++;
                    exit(0);
                }
            }
            if(count==0){
                System.out.println("You entered wrong password and username");
                jTextField1.setText("");
                jPasswordField1.setText("");
            }
        }catch(Exception e){
            e.printStackTrace();
        }
        
        
        
      }
        else if(username_entered.equals("")){
            System.out.println("please entered the username ");
        }
        else if(password_entered.equals("")){
            System.out.println("please entered the password ");
        }
        else{
            System.out.println("Please entered the username and password!!");
        }
        // TODO add your handling code here:
    }//GEN-LAST:event_jButton1ActionPerformed

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(HOME_PAGE.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(HOME_PAGE.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(HOME_PAGE.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(HOME_PAGE.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new HOME_PAGE().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton jButton1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JPasswordField jPasswordField1;
    private javax.swing.JTextField jTextField1;
    // End of variables declaration//GEN-END:variables
}