gistfile1.txt

/*
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 * and open the template in the editor.
 */
package perpustakaan.ui;

import java.awt.event.WindowEvent;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.DefaultListModel;
import javax.swing.JOptionPane;
import perpustakaan.ConnectionHelper;

/**
 *
 * @author ygsto
 */
public class TambahPeminjamanJFrame extends javax.swing.JFrame {
    Connection conn;
    PreparedStatement stmtBook;
    PreparedStatement stmtMahasiswa;
    PreparedStatement stmtCekDipinjam;
    PreparedStatement stmtAddPinjam;
    DefaultListModel modelBuku;
    DefaultListModel modelMahasiswa;
    ArrayList<Integer> idsBuku = new ArrayList<>();
    ArrayList<Integer> idsMahasiswa = new ArrayList<>();

    /**
     * Creates new form TambahPeminjamanJFrame
     */
    public TambahPeminjamanJFrame() {
        initComponents();
        
        modelBuku = new DefaultListModel();
        modelMahasiswa = new DefaultListModel();
        this.listBuku.setModel(modelBuku);
        this.listMahasiswa.setModel(modelMahasiswa);
        
        try {
            conn = ConnectionHelper.getConnection();
            stmtBook = this.conn.prepareStatement("SELECT * FROM buku WHERE judul LIKE ?");
            stmtMahasiswa = this.conn.prepareStatement("SELECT * FROM mahasiswa WHERE nama LIKE ?");
            stmtCekDipinjam = this.conn.prepareStatement("SELECT COUNT(*) FROM peminjaman WHERE tanggal_kembali IS null AND id_buku = ?");
            stmtAddPinjam = this.conn.prepareStatement("INSERT INTO peminjaman VALUES(null, ?, ?, NOW(), null)");
        } catch (SQLException ex) {
            Logger.getLogger(TambahPeminjamanJFrame.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    /**
     * 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() {

        jScrollPane1 = new javax.swing.JScrollPane();
        listMahasiswa = new javax.swing.JList<>();
        jScrollPane2 = new javax.swing.JScrollPane();
        listBuku = new javax.swing.JList<>();
        txtBuku = new javax.swing.JTextField();
        btnBuku = new javax.swing.JButton();
        btnMahasiswa = new javax.swing.JButton();
        txtMahasiswa = new javax.swing.JTextField();
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        btnSend = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        listMahasiswa.setModel(new javax.swing.AbstractListModel<String>() {
            String[] strings = { "Item 1", "Item 2", "Item 3", "Item 4", "Item 5" };
            public int getSize() { return strings.length; }
            public String getElementAt(int i) { return strings[i]; }
        });
        jScrollPane1.setViewportView(listMahasiswa);

        listBuku.setModel(new javax.swing.AbstractListModel<String>() {
            String[] strings = { "Item 1", "Item 2", "Item 3", "Item 4", "Item 5" };
            public int getSize() { return strings.length; }
            public String getElementAt(int i) { return strings[i]; }
        });
        jScrollPane2.setViewportView(listBuku);

        btnBuku.setText("Cari");
        btnBuku.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btnBukuActionPerformed(evt);
            }
        });

        btnMahasiswa.setText("Cari");
        btnMahasiswa.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btnMahasiswaActionPerformed(evt);
            }
        });

        jLabel1.setText("Buku");

        jLabel2.setText("Mahasiswa");

        btnSend.setText("Kirim");
        btnSend.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btnSendActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jLabel1)
                        .addGap(0, 0, Short.MAX_VALUE))
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addGap(0, 2, Short.MAX_VALUE)
                        .addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 249, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addComponent(txtBuku)
                        .addGap(18, 18, 18)
                        .addComponent(btnBuku)))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jLabel2)
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                        .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                            .addComponent(txtMahasiswa)
                            .addGap(18, 18, 18)
                            .addComponent(btnMahasiswa))
                        .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 249, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addGap(10, 10, 10))
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addComponent(btnSend)
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel1)
                    .addComponent(jLabel2))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(txtBuku, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(btnBuku)
                    .addComponent(txtMahasiswa, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(btnMahasiswa))
                .addGap(16, 16, 16)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 300, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 300, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(18, 18, 18)
                .addComponent(btnSend)
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );

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

    private void btnBukuActionPerformed(java.awt.event.ActionEvent evt) {                                        
        try {
            // TODO add your handling code here:
            modelBuku.setSize(0);
            
            this.stmtBook.setString(1, '%' + txtBuku.getText() + '%');
            ResultSet rs = this.stmtBook.executeQuery();
            
            while(rs.next()) {
                modelBuku.addElement(rs.getString("judul"));
                idsBuku.add(rs.getInt("id_buku"));
            }
        } catch (SQLException ex) {
            Logger.getLogger(TambahPeminjamanJFrame.class.getName()).log(Level.SEVERE, null, ex);
        }
    }                                       

    private void btnMahasiswaActionPerformed(java.awt.event.ActionEvent evt) {                                             
        // TODO add your handling code here:                           
        try {
            modelMahasiswa.setSize(0);
            idsMahasiswa.clear();
            
            this.stmtMahasiswa.setString(1, '%' + txtMahasiswa.getText() + '%');
            ResultSet rs = this.stmtMahasiswa.executeQuery();
            
            while(rs.next()) {
                modelMahasiswa.addElement(rs.getString("nama"));
                idsMahasiswa.add(rs.getInt("id_mahasiswa"));
            }
        } catch (SQLException ex) {
            Logger.getLogger(TambahPeminjamanJFrame.class.getName()).log(Level.SEVERE, null, ex);
        }
    }                                            

    private void btnSendActionPerformed(java.awt.event.ActionEvent evt) {                                        
        // TODO add your handling code here:
        int selectedBuku = listBuku.getSelectedIndex();
        int selectedMahasiswa = listMahasiswa.getSelectedIndex();
        
        if (selectedBuku == -1) {
            JOptionPane.showMessageDialog(this, "Pilih buku terlebih dahulu.");
            
            return;
        }
        
        if (selectedMahasiswa == -1) {
            JOptionPane.showMessageDialog(this, "Pilih mahasiswa terlebih dahulu.");
            
            return;
        }
        
        int idBuku = idsBuku.get(selectedBuku);
        int idMahasiswa = idsMahasiswa.get(selectedMahasiswa);
        
        try {
            this.stmtCekDipinjam.setInt(1, idBuku);
            ResultSet rs = this.stmtCekDipinjam.executeQuery();
            int size = 0;
            
            if (rs != null) 
            {
              rs.last();    // moves cursor to the last row
              size = rs.getInt("COUNT(*)"); // get row id 
            }
            
            if (size > 0) {
                JOptionPane.showMessageDialog(this, "Buku masih dipinjam.");
                
                return;
            }
            
            this.stmtAddPinjam.setInt(1, idBuku);
            this.stmtAddPinjam.setInt(2, idMahasiswa);
            this.stmtAddPinjam.execute();
            
        } catch (SQLException ex) {
            Logger.getLogger(TambahPeminjamanJFrame.class.getName()).log(Level.SEVERE, null, ex);
        }
    }                                       

    /**
     * @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(TambahPeminjamanJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(TambahPeminjamanJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(TambahPeminjamanJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(TambahPeminjamanJFrame.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 TambahPeminjamanJFrame().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify                     
    private javax.swing.JButton btnBuku;
    private javax.swing.JButton btnMahasiswa;
    private javax.swing.JButton btnSend;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JScrollPane jScrollPane2;
    private javax.swing.JList<String> listBuku;
    private javax.swing.JList<String> listMahasiswa;
    private javax.swing.JTextField txtBuku;
    private javax.swing.JTextField txtMahasiswa;
    // End of variables declaration                   
}