Login.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 aplikasi;

import database.Koneksi;
import placeholder.Username;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
import javax.swing.JOptionPane;
import javax.swing.ImageIcon;

/**
 *
 * @author Firmansyah Helmi Kurniawan, Rizki Wiguna, Inesya Adella, Frans Davidson Mangapul Nababan
 */
public class Login extends javax.swing.JFrame {

    /**
     * @return the user_id
     */
    Connection conn;
    Statement stat;
    ResultSet rs;
    String sql;
    String id;
    private static String s_username;

    /**
     * Creates new form NewJFrame
     */
    public Login() {
        initComponents();
        this.setLocationRelativeTo(null);
        ImageIcon icon = new ImageIcon("src/images/tokobuku.png");
        setIconImage(icon.getImage());

        Koneksi DB = new Koneksi();
        DB.config();
        conn = DB.conn;
        stat = DB.stm;
        //java_project | JAVATMJ@
    }

    public static String getUser_id() {
        return s_username;
    }

    /**
     * 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">
    private void initComponents() {

        jPanel1 = new javax.swing.JPanel();
        jLabel3 = new javax.swing.JLabel();
        jPanel2 = new javax.swing.JPanel();
        lbl_login = new javax.swing.JLabel();
        TF_username = new Username();
        TF_password = new placeholder.Password();
        BTN_masuk = new javax.swing.JButton();
        lbl_daftar = new javax.swing.JLabel();
        lbl_login_icon = new javax.swing.JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("BUKU BOS!!!");
        setResizable(false);
        getContentPane().setLayout(new org.netbeans.lib.awtextra.AbsoluteLayout());

        jPanel1.setBackground(new java.awt.Color(166, 227, 233));
        jPanel1.setLayout(new org.netbeans.lib.awtextra.AbsoluteLayout());

        jLabel3.setIcon(new javax.swing.ImageIcon(getClass().getResource("/images/tokobuku.png"))); // NOI18N
        jPanel1.add(jLabel3, new org.netbeans.lib.awtextra.AbsoluteConstraints(0, 0, -1, -1));

        getContentPane().add(jPanel1, new org.netbeans.lib.awtextra.AbsoluteConstraints(284, 0, 300, 280));

        jPanel2.setBackground(new java.awt.Color(176, 224, 212));
        jPanel2.setLayout(new org.netbeans.lib.awtextra.AbsoluteLayout());

        lbl_login.setFont(new java.awt.Font("Segoe UI Historic", 1, 18)); // NOI18N
        lbl_login.setText("Login");
        jPanel2.add(lbl_login, new org.netbeans.lib.awtextra.AbsoluteConstraints(110, 30, -1, -1));

        TF_username.setBackground(new java.awt.Color(227, 253, 253));
        TF_username.setFont(new java.awt.Font("Segoe UI Historic", 1, 18)); // NOI18N
        jPanel2.add(TF_username, new org.netbeans.lib.awtextra.AbsoluteConstraints(60, 70, 151, 43));
        TF_username.getAccessibleContext().setAccessibleName("");
        TF_username.getAccessibleContext().setAccessibleDescription("");

        TF_password.setBackground(new java.awt.Color(227, 253, 253));
        TF_password.setFont(new java.awt.Font("Segoe UI Historic", 1, 18)); // NOI18N
        TF_password.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                TF_passwordActionPerformed(evt);
            }
        });
        jPanel2.add(TF_password, new org.netbeans.lib.awtextra.AbsoluteConstraints(60, 120, 151, 43));

        BTN_masuk.setIcon(new javax.swing.ImageIcon(getClass().getResource("/images/login_48px.png"))); // NOI18N
        BTN_masuk.setCursor(new java.awt.Cursor(java.awt.Cursor.HAND_CURSOR));
        BTN_masuk.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                BTN_masukActionPerformed(evt);
            }
        });
        jPanel2.add(BTN_masuk, new org.netbeans.lib.awtextra.AbsoluteConstraints(60, 170, 151, 48));

        lbl_daftar.setIcon(new javax.swing.ImageIcon(getClass().getResource("/images/add_user_male_48px.png"))); // NOI18N
        lbl_daftar.setToolTipText("");
        lbl_daftar.setCursor(new java.awt.Cursor(java.awt.Cursor.HAND_CURSOR));
        lbl_daftar.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                lbl_daftarMouseClicked(evt);
            }
        });
        jPanel2.add(lbl_daftar, new org.netbeans.lib.awtextra.AbsoluteConstraints(160, 220, -1, 50));

        getContentPane().add(jPanel2, new org.netbeans.lib.awtextra.AbsoluteConstraints(0, 0, 290, 280));
        getContentPane().add(lbl_login_icon, new org.netbeans.lib.awtextra.AbsoluteConstraints(118, 229, -1, -1));

        pack();
    }// </editor-fold>

    private void TF_passwordActionPerformed(java.awt.event.ActionEvent evt) {
        // TODO add your handling code here:
    }

    private void BTN_masukActionPerformed(java.awt.event.ActionEvent evt) {
        String username = TF_username.getText();
        String password = TF_password.getText();
        try {
            sql = "SELECT * FROM users WHERE username='"+username+"' AND password='"+password+"'";
            rs = stat.executeQuery(sql);
            if (rs.next()) {
                if (username.equals(rs.getString("username")) && password.equals(rs.getString("password"))) {
                    JOptionPane.showMessageDialog(null, "Berhasil Login");
                    s_username = rs.getString("username");
                    new Home().setVisible(true);
                    dispose();
                }
            } else {
                JOptionPane.showMessageDialog(null, "Username atau password salah");
            }
        } catch (Exception e) {
            JOptionPane.showMessageDialog(this, e.getMessage());
        }
    }

    private void lbl_daftarMouseClicked(java.awt.event.MouseEvent evt) {
//        Register register = new Register(); Membuat instance object dari class Register
//        register.setVisible(true);
        new Register().setVisible(true);
        dispose();
    }

    /**
     * @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(Login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(Login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(Login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(Login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>
        //</editor-fold>

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

    // Variables declaration - do not modify
    private javax.swing.JButton BTN_masuk;
    private javax.swing.JTextField TF_password;
    private javax.swing.JTextField TF_username;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel2;
    private javax.swing.JLabel lbl_daftar;
    private javax.swing.JLabel lbl_login;
    private javax.swing.JLabel lbl_login_icon;
    // End of variables declaration
}