NetBeans KeyBoard Shortcuts

How To Display All NetBeans KeyBoard Shortcuts

----------------------------------

1 - In NetBeans Click Help In Top Menu .
2 - Click KeyBoard Shortcuts Card .
And A pdf Will Be Showing With All NetBeans Shortcuts .
                             
NetBeans Shortcuts
Page 1
NetBeans Shortcuts
Page 2



Java And MySQL - Insert Update Delete And Display Data On JTable

Java Code -  Insert Update Delete And Show Records In JTable Using NetBeans .

                                                                           


In this java Tutorial we will see How To Insert , Update And Delete Record From MySQL 
Database And Display Data In JTable Using NetBeans .



Part 1


Part 2


Create A Class And Call It User :

package JAVA_VIDEOS_TUTORIALS;

public class User {
    
    private int id;
    private String firstName;
    private String lastName;
    private int age;
    
    public User(int ID, String FirstName, String LastName, int Age)
    {
        this.id = ID;
        this.firstName = FirstName;
        this.lastName = LastName;
        this.age = Age;
    }
    
    public int getId()
    {
        return id;
    }
    
    public String getFirstName()
    {
        return firstName;
    }
    
    public String getLastNAme()
    {
        return lastName;
    }
    
    public int getAge()
    {
        return age;
    }
}


Methods :
    - Method "getConnection" This Method Return The Connection :
       
    public Connection getConnection()
   {
       Connection con;

       try {
           con = DriverManager.getConnection("jdbc:mysql://localhost/test_db", "root","");
           return con;
       } 
      catch (Exception e) {
           e.printStackTrace();
           return null;
       }
   }

 - Method "getUsersList" This Method Populate An ArrayList Of User With Data From Mysql Database And Return This ArrayList :

public ArrayList<User> getUsersList()
   {
       ArrayList<User> usersList = new ArrayList<User>();
       Connection connection = getConnection();
       
       String query = "SELECT * FROM  `users` ";
       Statement st;
       ResultSet rs;
       
       try {
           st = connection.createStatement();
           rs = st.executeQuery(query);

           User user;

           while(rs.next())
           {
user = new User(rs.getInt("id"),rs.getString("fname"),rs.getString("lname"),rs.getInt("age"));
               usersList.add(user);
           }

       } 
      catch (Exception e) {
           e.printStackTrace();
       }
       return usersList;
   }

 - Method "Show_Users_In_JTable" This Method Display Data In JTable Using The ArrayList Returned By "getUsersList" :
   
public void showItem(int index)
    {
        jTextField_id.setText(getItemsList().get(index).getId());

        jTextField_name.setText(getItemsList().get(index).getName());

        jTextArea_description.setText(getItemsList().get(index).getDescription());
        
        ImageIcon icon = new ImageIcon(getItemsList().get(index).getImage());

        Image image = icon.getImage().getScaledInstance(jLabel_image.getWidth(), 
                                 jLabel_image.getHeight(), Image.SCALE_SMOOTH);

        jLabel_image.setIcon(new ImageIcon(image));
    }


 - Method "executeSQlQuery" This Method Take Two Parameters One Is The Sql Query To Execute ( Insert, Update, Delete) In MySQL Database And The Other Is The Message To Diplay , And Refresh The JTable Data With The New Data :

public void executeSQlQuery(String query, String message)
   {
       Connection con = getConnection();
       Statement st;
       try{
           st = con.createStatement();
           if((st.executeUpdate(query)) == 1)
           {
               // refresh jtable data
               DefaultTableModel model = (DefaultTableModel)jTable_Display_Users.getModel();
               model.setRowCount(0);
               Show_Users_In_JTable();
               
               JOptionPane.showMessageDialog(null, "Data "+message+" Succefully");
           }else{
               JOptionPane.showMessageDialog(null, "Data Not "+message);
           }
       }catch(Exception ex){
           ex.printStackTrace();
       }
   }

Project Source Code :
    
package JAVA_VIDEOS_TUTORIALS;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.ArrayList;
import javax.swing.JOptionPane;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableModel;

/**
 *
 * @author 1bestcsharp.blogspot.com
 */
public class Java_Insert_Update_Delete_Display extends javax.swing.JFrame {

    /**
     * Creates new form Java_Insert_Update_Delete_Display
     */
    public Java_Insert_Update_Delete_Display() {
        initComponents();
        Show_Users_In_JTable();
    }
    
     // get the connection
   public Connection getConnection()
   {
       Connection con;
       try {
           con = DriverManager.getConnection("jdbc:mysql://localhost/test_db", "root","");
           return con;
       } catch (Exception e) {
           e.printStackTrace();
           return null;
       }
   }
        

 // get a list of users from mysql database
   public ArrayList<User> getUsersList()
   {
       ArrayList<User> usersList = new ArrayList<User>();
       Connection connection = getConnection();
       
       String query = "SELECT * FROM  `users` ";
       Statement st;
       ResultSet rs;
       
       try {
           st = connection.createStatement();
           rs = st.executeQuery(query);
           User user;
           while(rs.next())
           {
               user = new User(rs.getInt("id"),rs.getString("fname"),rs.getString("lname"),rs.getInt("age"));
               usersList.add(user);
           }
       } catch (Exception e) {
           e.printStackTrace();
       }
       return usersList;
   }
   
   // Display Data In JTable
   
   public void Show_Users_In_JTable()
   {
       ArrayList<User> list = getUsersList();
       DefaultTableModel model = (DefaultTableModel)jTable_Display_Users.getModel();
       Object[] row = new Object[4];
       for(int i = 0; i < list.size(); i++)
       {
           row[0] = list.get(i).getId();
           row[1] = list.get(i).getFirstName();
           row[2] = list.get(i).getLastNAme();
           row[3] = list.get(i).getAge();
           
           model.addRow(row);
       }
    }
        
   // Execute The Insert Update And Delete Querys
   public void executeSQlQuery(String query, String message)
   {
       Connection con = getConnection();
       Statement st;
       try{
           st = con.createStatement();
           if((st.executeUpdate(query)) == 1)
           {
               // refresh jtable data
               DefaultTableModel model = (DefaultTableModel)jTable_Display_Users.getModel();
               model.setRowCount(0);
               Show_Users_In_JTable();
               
               JOptionPane.showMessageDialog(null, "Data "+message+" Succefully");
           }else{
               JOptionPane.showMessageDialog(null, "Data Not "+message);
           }
       }catch(Exception ex){
           ex.printStackTrace();
       }
   }
   
   
    /**
     * 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();
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        jLabel4 = new javax.swing.JLabel();
        jTextField_Id = new javax.swing.JTextField();
        jTextField_FirstName = new javax.swing.JTextField();
        jTextField_LastName = new javax.swing.JTextField();
        jTextField_Age = new javax.swing.JTextField();
        jScrollPane1 = new javax.swing.JScrollPane();
        jTable_Display_Users = new javax.swing.JTable();
        jButton_Insert = new javax.swing.JButton();
        jButton_Update = new javax.swing.JButton();
        jButton_Delete = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jPanel1.setBackground(new java.awt.Color(204, 204, 204));

        jLabel1.setFont(new java.awt.Font("Verdana", 0, 18)); // NOI18N
        jLabel1.setText("Id:");

        jLabel2.setFont(new java.awt.Font("Verdana", 0, 18)); // NOI18N
        jLabel2.setText("First Name:");

        jLabel3.setFont(new java.awt.Font("Verdana", 0, 18)); // NOI18N
        jLabel3.setText("Last Name:");

        jLabel4.setFont(new java.awt.Font("Verdana", 0, 18)); // NOI18N
        jLabel4.setText("Age:");

        jTextField_Id.setFont(new java.awt.Font("Verdana", 0, 14)); // NOI18N

        jTextField_FirstName.setFont(new java.awt.Font("Verdana", 0, 14)); // NOI18N
        jTextField_FirstName.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jTextField_FirstNameActionPerformed(evt);
            }
        });

        jTextField_LastName.setFont(new java.awt.Font("Verdana", 0, 14)); // NOI18N
        jTextField_LastName.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jTextField_LastNameActionPerformed(evt);
            }
        });

        jTextField_Age.setFont(new java.awt.Font("Verdana", 0, 14)); // NOI18N
        jTextField_Age.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jTextField_AgeActionPerformed(evt);
            }
        });

        jTable_Display_Users.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][] {

            },
            new String [] {
                "Id", "First Name", "Last Name", "Age"
            }
        ));
        jTable_Display_Users.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jTable_Display_UsersMouseClicked(evt);
            }
        });
        jScrollPane1.setViewportView(jTable_Display_Users);

        jButton_Insert.setFont(new java.awt.Font("Verdana", 1, 14)); // NOI18N
        jButton_Insert.setIcon(new javax.swing.ImageIcon(getClass().getResource("/JAVA_VIDEOS_TUTORIALS/icons/add.png"))); // NOI18N
        jButton_Insert.setText("Insert");
        jButton_Insert.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton_InsertActionPerformed(evt);
            }
        });

        jButton_Update.setFont(new java.awt.Font("Verdana", 1, 14)); // NOI18N
        jButton_Update.setIcon(new javax.swing.ImageIcon(getClass().getResource("/JAVA_VIDEOS_TUTORIALS/icons/Refresh.png"))); // NOI18N
        jButton_Update.setText("Update");
        jButton_Update.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton_UpdateActionPerformed(evt);
            }
        });

        jButton_Delete.setFont(new java.awt.Font("Verdana", 1, 14)); // NOI18N
        jButton_Delete.setIcon(new javax.swing.ImageIcon(getClass().getResource("/JAVA_VIDEOS_TUTORIALS/icons/delete.png"))); // NOI18N
        jButton_Delete.setText("Delete");
        jButton_Delete.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton_DeleteActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGap(33, 33, 33)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(jPanel1Layout.createSequentialGroup()
                                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                                    .addComponent(jLabel4)
                                    .addComponent(jLabel3))
                                .addGap(12, 12, 12))
                            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                                    .addComponent(jLabel2)
                                    .addComponent(jLabel1))
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)))
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jTextField_Id, javax.swing.GroupLayout.PREFERRED_SIZE, 129, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(jTextField_FirstName, javax.swing.GroupLayout.PREFERRED_SIZE, 129, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(jTextField_LastName, javax.swing.GroupLayout.PREFERRED_SIZE, 129, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(jTextField_Age, javax.swing.GroupLayout.PREFERRED_SIZE, 129, javax.swing.GroupLayout.PREFERRED_SIZE)))
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addContainerGap()
                        .addComponent(jButton_Insert)
                        .addGap(18, 18, 18)
                        .addComponent(jButton_Update)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 20, Short.MAX_VALUE)
                        .addComponent(jButton_Delete)))
                .addGap(18, 18, 18)
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 409, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap())
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGap(36, 36, 36)
                        .addComponent(jLabel1))
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                        .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addComponent(jTextField_Id, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addGap(11, 11, 11)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel2)
                    .addComponent(jTextField_FirstName, javax.swing.GroupLayout.PREFERRED_SIZE, 34, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(18, 18, 18)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel3)
                    .addComponent(jTextField_LastName, javax.swing.GroupLayout.PREFERRED_SIZE, 34, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel4)
                    .addComponent(jTextField_Age, javax.swing.GroupLayout.PREFERRED_SIZE, 34, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(75, 75, 75)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton_Insert, javax.swing.GroupLayout.PREFERRED_SIZE, 46, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton_Update, javax.swing.GroupLayout.PREFERRED_SIZE, 46, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton_Delete, javax.swing.GroupLayout.PREFERRED_SIZE, 46, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(192, 192, 192))
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
        );

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

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

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

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

 // show jtable row data in jtextfields in the mouse clicked event
    private void jTable_Display_UsersMouseClicked(java.awt.event.MouseEvent evt) {                                                  
       // Get The Index Of The Slected Row 
        int i = jTable_Display_Users.getSelectedRow();

        TableModel model = jTable_Display_Users.getModel();
        
        jTextField_Id.setText(model.getValueAt(i,0).toString());

        jTextField_FirstName.setText(model.getValueAt(i,1).toString());

        jTextField_LastName.setText(model.getValueAt(i,2).toString());

        jTextField_Age.setText(model.getValueAt(i,3).toString());
    }                                                 

 // Button Insert
    private void jButton_InsertActionPerformed(java.awt.event.ActionEvent evt) {                                               
        String query = "INSERT INTO `users`(`fname`, `lname`, `age`) VALUES ('"+jTextField_FirstName.getText()+"','"+jTextField_LastName.getText()+"',"+jTextField_Age.getText()+")";
        
        executeSQlQuery(query, "Inserted");
    }                                              


 // Button Update
    private void jButton_UpdateActionPerformed(java.awt.event.ActionEvent evt) {                                               
       String query = "UPDATE `users` SET `fname`='"+jTextField_FirstName.getText()+"',`lname`='"+jTextField_LastName.getText()+"',`age`="+jTextField_Age.getText()+" WHERE `id` = "+jTextField_Id.getText();
       executeSQlQuery(query, "Updated");
    }                                              


 // Button Delete
    private void jButton_DeleteActionPerformed(java.awt.event.ActionEvent evt) {                                               
        String query = "DELETE FROM `users` WHERE id = "+jTextField_Id.getText();
         executeSQlQuery(query, "Deleted");
    }                                              

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

    // Variables declaration - do not modify                     
    private javax.swing.JButton jButton_Delete;
    private javax.swing.JButton jButton_Insert;
    private javax.swing.JButton jButton_Update;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTable jTable_Display_Users;
    private javax.swing.JTextField jTextField_Age;
    private javax.swing.JTextField jTextField_FirstName;
    private javax.swing.JTextField jTextField_Id;
    private javax.swing.JTextField jTextField_LastName;
    // End of variables declaration                   
}


///////////////OUTPUT:


NetBeans Database Insert Button
Java Insert Button To MySQL
netbeans update button
Java Update Button To MySQL
netbeans database remove button
Java Delete Button To MySQL

if you want the source code click on the download button below