import java.awt.*;

import java.awt.event.*;

import java.io.*;

import java.util.ArrayList;

import java.util.Vector;

import javax.swing.*;

import javax.swing.event.*;

import javax.swing.table.*;

public class ComboBoxTableEditorDemo

{

public static void main(String[] args)

{

SwingUtilities.invokeLater(new Runnable() {

public void run() {

createAndShowGUI();

}

});

}

public static void createAndShowGUI()

{

// Build a table with data

Object[][] data =

{

{"Color", "Red"},

{"Fruit", "Banana"},

{"Shape", "Square"},

};

String[] columnNames = {"Type","Value"};

JTable table = new JTable(data, columnNames);

table.setRowHeight(table.getRowHeight() + 6);

table.setPreferredScrollableViewportSize(table.getPreferredSize());

JScrollPane scrollPane = new JScrollPane( table );

// Editor for first column

String[] items = { "Color", "Fruit", "Shape" };

DefaultCellEditor dce = new DefaultCellEditor(new JComboBox<String>(items));

table.getColumnModel().getColumn(0).setCellEditor(dce);

// Editor with multiple models for second column

JComboBox<String> comboBox = new JComboBox<>();

comboBox.setRenderer( new PromptComboBoxRenderer("Select Value") );

ComboBoxTableEditor editor = new ComboBoxTableEditor(comboBox, 0);

table.getColumnModel().getColumn(1).setCellEditor( editor );

String[] items1 = { "Red", "Blue", "Green" };

editor.addModel("Color", items1);

String[] items2 = { "Circle", "Square", "Triangle" };

editor.addModel("Shape", items2);

String[] items3 = { "Apple", "Orange", "Banana" };

editor.addModel("Fruit", items3);

// Reset second column when first column changes

// (replaces TableModelListener)

Action action = new AbstractAction()

{

public void actionPerformed(ActionEvent e)

{

TableCellListener tcl = (TableCellListener)e.getSource();

int column = tcl.getColumn();

if (column == 0)

{

int row = tcl.getRow();

TableModel model = tcl.getTable().getModel();

model.setValueAt(null, row, 1);

}

}

};

TableCellListener tcl = new TableCellListener(table, action);

JFrame frame = new JFrame("Combo Box Table Editor");

frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );

frame.add( scrollPane );

frame.setSize(300, 200);

frame.setLocationRelativeTo( null );

frame.setVisible(true);

}

}