Dynamic Row, Column using JTable

Following code will help to generate the Dyanamic Rows, Columns in JTable of Swing..

import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;

public class TableRowColumn extends JFrame {
 private final static String LETTERS = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

 JTable table;

 DefaultTableModel model;

 JPanel buttonPanel;

 JButton button;

 public TableRowColumn() {
  // Create table

  Object[][] data = { { "1", "A" }, { "2", "B" }, { "3", "C" } };
  String[] columnNames = { "Number", "Letter" };
  model = new DefaultTableModel(data, columnNames);
  table = new JTable(model);
  table.putClientProperty("terminateEditOnFocusLost", Boolean.TRUE);

  // Add table and a Button panel to the frame

  JScrollPane scrollPane = new JScrollPane(table);
  getContentPane().add(scrollPane);

  buttonPanel = new JPanel();
  JScrollPane sp = new JScrollPane(buttonPanel);

  getContentPane().add(sp, BorderLayout.SOUTH);

  // ---------------------------------------------------

  button = new JButton("Add Row");
  buttonPanel.add(button);
  button.addActionListener(new ActionListener() {
   public void actionPerformed(ActionEvent e) {
    model.addRow(createRow());
    int row = table.getRowCount() - 1;
    table.changeSelection(row, 0, false, false);
    table.requestFocusInWindow();
   }
  });

  // ---------------------------------------------------

  button = new JButton("Rem Sele Row");
  buttonPanel.add(button);
  button.addActionListener(new ActionListener() {
   public void actionPerformed(ActionEvent e) {
    model.removeRow(table.getSelectedRow());
   }
  });

  button = new JButton("Rem Fst Row");
  buttonPanel.add(button);
  button.addActionListener(new ActionListener() {
   public void actionPerformed(ActionEvent e) {
    if (table.getRowCount() > 0) {
     model.removeRow(0);
    }
   }
  });

  button = new JButton("Rem Lst Row");
  buttonPanel.add(button);
  button.addActionListener(new ActionListener() {
   public void actionPerformed(ActionEvent e) {
    if (table.getRowCount() > 0)
     model.removeRow(table.getRowCount() - 1);
   }
  });

  button = new JButton("Insert Row");
  buttonPanel.add(button);
  button.addActionListener(new ActionListener() {
   public void actionPerformed(ActionEvent e) {
    model.insertRow(0, createRow());
    table.changeSelection(0, 0, false, false);
    table.requestFocusInWindow();
   }
  });

  // ---------------------------------------------------

  button = new JButton("Empty Row");
  buttonPanel.add(button);
  button.addActionListener(new ActionListener() {
   public void actionPerformed(ActionEvent e) {
    model.setRowCount(model.getRowCount() + 1);
    int row = table.getRowCount() - 1;
    table.changeSelection(row, 0, false, false);
    table.requestFocusInWindow();
   }
  });
  // ---------------------------------------------------
  button = new JButton("Add Column");
  buttonPanel.add(button);
  button.addActionListener(new ActionListener() {
   public void actionPerformed(ActionEvent e) {
    String header = "Col" + (table.getColumnCount() + 1);
    model.addColumn(header);
    table.requestFocusInWindow();
   }
  });
  // ---------------------------------------------------
  button = new JButton("Add Column & Data");
  buttonPanel.add(button);
  button.addActionListener(new ActionListener() {
   public void actionPerformed(ActionEvent e) {
    String header = "Col" + (table.getColumnCount() + 1);

    int rows = table.getRowCount();
    String[] values = new String[rows];

    for (int j = 0; j < rows; j++) {
     values[j] = Integer.toString(j);
    }
    model.addColumn(header, values);
    table.requestFocusInWindow();
   }
  });
  // ---------------------------------------------------
  button = new JButton("Add Column - No Reordering");
  buttonPanel.add(button);
  button.addActionListener(new ActionListener() {
   public void actionPerformed(ActionEvent e) {
    /*
     * Use this method when you don't want existing columns to be
     * rebuilt from the model. ' (ie. moved columns will not be
     * reordered)
     */
    table.setAutoCreateColumnsFromModel(false);
    String header = "Col" + (table.getColumnCount() + 1);
    model.addColumn(header);
    // AutoCreate is turned off so create table column here
    TableColumn column = new TableColumn(table.getColumnCount());
    column.setHeaderValue(header);
    table.addColumn(column);
    // These won't work once setAutoCreate... has been set to false
    buttonPanel.getComponent(3).setEnabled(false);
    buttonPanel.getComponent(4).setEnabled(false);
    table.requestFocusInWindow();
   }
  });
  // ---------------------------------------------------
  button = new JButton("Remove Last Column");
  buttonPanel.add(button);
  button.addActionListener(new ActionListener() {
   public void actionPerformed(ActionEvent e) {
    int columns = model.getColumnCount();
    if (columns > 0) {

     if (!table.getAutoCreateColumnsFromModel()) {
      int view = table.convertColumnIndexToView(columns - 1);
      TableColumn column = table.getColumnModel().getColumn(
        view);
      table.getColumnModel().removeColumn(column);
     }

     model.setColumnCount(columns - 1);
    }
    table.requestFocusInWindow();
   }
  });

 }

 private Object[] createRow() {
  Object[] newRow = new Object[2];
  int row = table.getRowCount() + 1;
  newRow[0] = Integer.toString(row);
  newRow[1] = LETTERS.substring(row - 1, row);
  return newRow;
 }

 public static void main(String[] args) {
  TableRowColumn frame = new TableRowColumn();
  frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
  frame.pack();
  frame.setLocationRelativeTo(null);
  frame.setVisible(true);
 }
}