lab 9.txt

package com.mycompany.mavenproject2;
import java.sql.*;
import java.util.Vector;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JOptionPane;
import javax.swing.table.DefaultTableModel;
public class OneG extends javax.swing.JFrame {

    /**
     * Creates new form OneG
     */
    public OneG() {
        initComponents();
        connect();
        Load();
    }
    Connection con;
    PreparedStatement pat;
    DefaultTableModel def;
    public void connect()
    {
        try {
            Class.forName("com.mysql.cj.jdbc.Driver");
            con=DriverManager.getConnection("jdbc:mysql://localhost/Student","root","");
        } catch (ClassNotFoundException ex) {
            Logger.getLogger(OneG.class.getName()).log(Level.SEVERE, null, ex);
        } catch (SQLException ex) {
            Logger.getLogger(OneG.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
    
      public void Load()
    {
        try {
            pat=con.prepareStatement("select *from inter");
            ResultSet rs=pat.executeQuery();
            ResultSetMetaData rss=rs.getMetaData();
            int c;
            c=rss.getColumnCount();
            def=(DefaultTableModel)jTable3.getModel();
            def.setRowCount(0);
            while(rs.next())
            {
                Vector v=new Vector();
                for(int i=0;i<c;i++)
                {
                    v.add(rs.getString("id"));
                     v.add(rs.getString("name"));
                      v.add(rs.getString("contact"));
                       v.add(rs.getString("college"));
                        v.add(rs.getString("course"));
                }
                def.addRow(v);
            }
            
        } catch (SQLException ex) {
            Logger.getLogger(OneG.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() {

        jSplitPane1 = new javax.swing.JSplitPane();
        jScrollPane1 = new javax.swing.JScrollPane();
        jTable1 = new javax.swing.JTable();
        jScrollPane2 = new javax.swing.JScrollPane();
        jTable2 = new javax.swing.JTable();
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        jLabel4 = new javax.swing.JLabel();
        txtName = new javax.swing.JTextField();
        txtContact = new javax.swing.JTextField();
        txtCollege = new javax.swing.JTextField();
        txtCourse = new javax.swing.JTextField();
        add_b = new javax.swing.JButton();
        update_b = new javax.swing.JButton();
        search_b = new javax.swing.JButton();
        delete_b = new javax.swing.JButton();
        jPanel3 = new javax.swing.JPanel();
        jScrollPane3 = new javax.swing.JScrollPane();
        jTable3 = new javax.swing.JTable();

        jTable1.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][] {
                {null, null, null, null},
                {null, null, null, null},
                {null, null, null, null},
                {null, null, null, null}
            },
            new String [] {
                "Title 1", "Title 2", "Title 3", "Title 4"
            }
        ));
        jScrollPane1.setViewportView(jTable1);

        jTable2.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][] {
                {null, null, null, null},
                {null, null, null, null},
                {null, null, null, null},
                {null, null, null, null}
            },
            new String [] {
                "Title 1", "Title 2", "Title 3", "Title 4"
            }
        ));
        jScrollPane2.setViewportView(jTable2);

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jLabel1.setText("Name");

        jLabel2.setText("Contact");

        jLabel3.setText("College");

        jLabel4.setText("Course");

        txtCollege.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                txtCollegeActionPerformed(evt);
            }
        });

        add_b.setText("add");
        add_b.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                add_bActionPerformed(evt);
            }
        });

        update_b.setText("update");
        update_b.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                update_bActionPerformed(evt);
            }
        });

        search_b.setText("search");
        search_b.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                search_bActionPerformed(evt);
            }
        });

        delete_b.setText("delete");
        delete_b.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                delete_bActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout jPanel3Layout = new javax.swing.GroupLayout(jPanel3);
        jPanel3.setLayout(jPanel3Layout);
        jPanel3Layout.setHorizontalGroup(
            jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 239, Short.MAX_VALUE)
        );
        jPanel3Layout.setVerticalGroup(
            jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 51, Short.MAX_VALUE)
        );

        jTable3.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][] {
                {null, null, null, null, null},
                {null, null, null, null, null},
                {null, null, null, null, null},
                {null, null, null, null, null}
            },
            new String [] {
                "id", "name", "contact", "college", "course"
            }
        ));
        jTable3.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jTable3MouseClicked(evt);
            }
        });
        jScrollPane3.setViewportView(jTable3);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jPanel3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
                        .addGap(50, 50, 50)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addGap(14, 14, 14)
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                                    .addComponent(search_b)
                                    .addComponent(add_b)))
                            .addGroup(layout.createSequentialGroup()
                                .addGap(4, 4, 4)
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                    .addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 49, javax.swing.GroupLayout.PREFERRED_SIZE)
                                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                                        .addComponent(jLabel3, javax.swing.GroupLayout.DEFAULT_SIZE, 49, Short.MAX_VALUE)
                                        .addComponent(jLabel2, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                        .addComponent(jLabel1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(update_b)
                            .addComponent(delete_b)
                            .addComponent(txtCollege, javax.swing.GroupLayout.PREFERRED_SIZE, 97, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(txtCourse, javax.swing.GroupLayout.PREFERRED_SIZE, 97, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(txtName, javax.swing.GroupLayout.PREFERRED_SIZE, 97, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(txtContact, javax.swing.GroupLayout.PREFERRED_SIZE, 97, javax.swing.GroupLayout.PREFERRED_SIZE))))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jScrollPane3, javax.swing.GroupLayout.DEFAULT_SIZE, 502, Short.MAX_VALUE)
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jPanel3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(55, 55, 55)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(jLabel1)
                            .addComponent(txtName, 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(jLabel2)
                            .addComponent(txtContact, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(jLabel3)
                            .addComponent(txtCollege, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(jLabel4)
                            .addComponent(txtCourse, 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(update_b)
                            .addComponent(add_b))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(search_b)
                            .addComponent(delete_b))
                        .addGap(0, 56, Short.MAX_VALUE))
                    .addComponent(jScrollPane3, javax.swing.GroupLayout.PREFERRED_SIZE, 0, Short.MAX_VALUE))
                .addContainerGap())
        );

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

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

    private void add_bActionPerformed(java.awt.event.ActionEvent evt) {                                      
        // TODO add your handling code here:
        try {
            String name,contact,college,course;
            name=txtName.getText();
            contact=txtContact.getText();
            college=txtCollege.getText();
            course=txtCourse.getText();
            pat=con.prepareStatement("insert into inter(name,contact,college,course)values(?,?,?,?)");
            pat.setString(1,name);
            pat.setString(2,contact);
            pat.setString(3,college);
            pat.setString(4,course);
            pat.executeUpdate();
            JOptionPane.showMessageDialog(this,"Records Added");
            Load();
            txtName.setText("");
            txtContact.setText("");
            txtCollege.setText("");
            txtCourse.setText("");
            txtName.requestFocus();
        } catch (SQLException ex) {
            Logger.getLogger(OneG.class.getName()).log(Level.SEVERE, null, ex);
        }
    }                                     

    private void update_bActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
        def=(DefaultTableModel)jTable3.getModel();
        int selected=jTable3.getSelectedRow();
        int id=Integer.parseInt(def.getValueAt(selected, 0).toString());
        try {
            String name,contact,college,course;
            name=txtName.getText();
            contact=txtContact.getText();
            college=txtCollege.getText();
            course=txtCourse.getText();
            pat=con.prepareStatement("update inter set name=?,contact=?,college=?,course=? where id=?");
            pat.setString(1,name);
            pat.setString(2,contact);
            pat.setString(3,college);
            pat.setString(4,course);
            pat.setInt(5, id);
            pat.executeUpdate();
            JOptionPane.showMessageDialog(this,"Records Updated");
            Load();
            txtName.setText("");
            txtContact.setText("");
            txtCollege.setText("");
            txtCourse.setText("");
            txtName.requestFocus();
        } catch (SQLException ex) {
            Logger.getLogger(oneD.class.getName()).log(Level.SEVERE, null, ex);
        
    }     
    }                                        

    private void search_bActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
        def=(DefaultTableModel)jTable3.getModel();
            
            int rows = jTable3.getRowCount();
            boolean record=false;
            String name1 =txtName.getText();
            for(int i=0;i<rows;i++){
                String n = (String) jTable3.getValueAt(i, 1);
            if(name1.equals(n)){
            txtName.setText(def.getValueAt(i, 1).toString());
            txtContact.setText(def.getValueAt(i, 2).toString());
            txtCollege.setText(def.getValueAt(i, 3).toString());
            txtCourse.setText(def.getValueAt(i, 4).toString());
            int ID=Integer.parseInt(def.getValueAt(i, 0).toString());
            JOptionPane.showMessageDialog(this,"Record found at"+ID+".");
            record=true;
            break;
            }
            }
            if(!record){
                JOptionPane.showMessageDialog(this,"No Records Found");
            }
    }                                        

    private void delete_bActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
        def=(DefaultTableModel)jTable3.getModel();
        int selected=jTable1.getSelectedRow();
        int id=Integer.parseInt(def.getValueAt(selected, 0).toString());
        try {
            pat=con.prepareStatement("delete from inter where id=?");
            pat.setInt(1, id);
            pat.executeUpdate();
            JOptionPane.showMessageDialog(this,"Records Deleted");
            Load();
            txtName.setText("");
            txtContact.setText("");
            txtCollege.setText("");
            txtCourse.setText("");
            txtName.requestFocus();
        } catch (SQLException ex) {
            Logger.getLogger(oneD.class.getName()).log(Level.SEVERE, null, ex);
        
    }   
    }                                        

    private void jTable3MouseClicked(java.awt.event.MouseEvent evt) {                                     
        // TODO add your handling code here:
        def=(DefaultTableModel)jTable3.getModel();
        int selected=jTable3.getSelectedRow();
        int id=Integer.parseInt(def.getValueAt(selected, 0).toString());
        txtName.setText(def.getValueAt(selected, 1).toString());
        txtContact.setText(def.getValueAt(selected, 2).toString());
        txtCollege.setText(def.getValueAt(selected, 3).toString());
        txtCourse.setText(def.getValueAt(selected, 4).toString());
    }                                    

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

    // Variables declaration - do not modify                     
    private javax.swing.JButton add_b;
    private javax.swing.JButton delete_b;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JPanel jPanel3;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JScrollPane jScrollPane2;
    private javax.swing.JScrollPane jScrollPane3;
    private javax.swing.JSplitPane jSplitPane1;
    private javax.swing.JTable jTable1;
    private javax.swing.JTable jTable2;
    private javax.swing.JTable jTable3;
    private javax.swing.JButton search_b;
    private javax.swing.JTextField txtCollege;
    private javax.swing.JTextField txtContact;
    private javax.swing.JTextField txtCourse;
    private javax.swing.JTextField txtName;
    private javax.swing.JButton update_b;
    // End of variables declaration                   
}