How to add checkbox and combobox to table cell?

Question

I create one form containing a table and some buttons.

An image is worth a thousand words:

How can I check the box and comboboxes in a table?

I am using NetBeans. I tried using drag and drop but didn't work.

Here is my form code.

public class HttpOutput extends javax.swing.JPanel { HttpElements current_Http_EleObject; /** * Creates new form HttpOutput */ public HttpOutput(HttpElements httpelements) { initComponents(); current_Http_EleObject=httpelements; TableColumn includeColumn = jTable1.getColumnModel().getColumn(0); includeColumn.setCellEditor(new DefaultCellEditor(new JCheckBox())); } 

Answer 1

Here combo cell inserts replicate the demo:

 import java.awt.*; import java.awt.event.*; import java.util.EventObject; import javax.swing.*; import javax.swing.event.*; import javax.swing.table.*; public class ComboCellInsetsDemo { public JComponent makeUI() { String[] columnNames = {"Name", "Check", "Condition"}; Object[][] data = { {"bbb", false, "="}, {"aaa", true, "<"} }; DefaultTableModel model = new DefaultTableModel(data, columnNames) { @Override public Class<?> getColumnClass(int column) { return getValueAt(0, column).getClass(); } }; JTable table = new JTable(model); table.setRowHeight(36); table.setAutoCreateRowSorter(true); TableColumn column = table.getColumnModel().getColumn(2); column.setCellRenderer(new ComboBoxCellRenderer()); column.setCellEditor(new ComboBoxCellEditor()); return new JScrollPane(table); } public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { @Override public void run() { createAndShowGUI(); } }); } public static void createAndShowGUI() { JFrame f = new JFrame(); f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); f.getContentPane().add(new ComboCellInsetsDemo().makeUI()); f.setSize(320, 240); f.setLocationRelativeTo(null); f.setVisible(true); } } class ComboBoxPanel extends JPanel { private String[] m = new String[] {">", "<", "=", "<="}; protected JComboBox<String> comboBox = new JComboBox<String>(m) { @Override public Dimension getPreferredSize() { Dimension d = super.getPreferredSize(); return new Dimension(40, d.height); } }; public ComboBoxPanel() { super(); setOpaque(true); comboBox.setEditable(true); add(comboBox); } } class ComboBoxCellRenderer extends ComboBoxPanel implements TableCellRenderer { public ComboBoxCellRenderer() { super(); setName("Table.cellRenderer"); } @Override public Component getTableCellRendererComponent( JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) { setBackground(isSelected?table.getSelectionBackground() :table.getBackground()); if(value!=null) { comboBox.setSelectedItem(value); } return this; } } class ComboBoxCellEditor extends ComboBoxPanel implements TableCellEditor { public ComboBoxCellEditor() { super(); comboBox.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { fireEditingStopped(); } }); addMouseListener(new MouseAdapter() { @Override public void mousePressed(MouseEvent e) { fireEditingStopped(); } }); } @Override public Component getTableCellEditorComponent( JTable table, Object value, boolean isSelected, int row, int column) { this.setBackground(table.getSelectionBackground()); comboBox.setSelectedItem(value); return this; } //Copid from DefaultCellEditor.EditorDelegate @Override public Object getCellEditorValue() { return comboBox.getSelectedItem(); } @Override public boolean shouldSelectCell(EventObject anEvent) { if(anEvent instanceof MouseEvent) { MouseEvent e = (MouseEvent)anEvent; return e.getID() != MouseEvent.MOUSE_DRAGGED; } return true; } @Override public boolean stopCellEditing() { if(comboBox.isEditable()) { comboBox.actionPerformed(new ActionEvent(this, 0, "")); } fireEditingStopped(); return true; } //Copid from AbstractCellEditor //protected EventListenerList listenerList = new EventListenerList(); transient protected ChangeEvent changeEvent = null; @Override public boolean isCellEditable(EventObject e) { return true; } @Override public void cancelCellEditing() { fireEditingCanceled(); } @Override public void addCellEditorListener(CellEditorListener l) { listenerList.add(CellEditorListener.class, l); } @Override public void removeCellEditorListener(CellEditorListener l) { listenerList.remove(CellEditorListener.class, l); } public CellEditorListener[] getCellEditorListeners() { return listenerList.getListeners(CellEditorListener.class); } protected void fireEditingStopped() { // Guaranteed to return a non-null array Object[] listeners = listenerList.getListenerList(); // Process the listeners last to first, notifying // those that are interested in this event for(int i = listeners.length-2; i>=0; i-=2) { if(listeners[i]==CellEditorListener.class) { // Lazily create the event: if(changeEvent == null) changeEvent = new ChangeEvent(this); ((CellEditorListener)listeners[i+1]).editingStopped(changeEvent); } } } protected void fireEditingCanceled() { // Guaranteed to return a non-null array Object[] listeners = listenerList.getListenerList(); // Process the listeners last to first, notifying // those that are interested in this event for(int i = listeners.length-2; i>=0; i-=2) { if(listeners[i]==CellEditorListener.class) { // Lazily create the event: if(changeEvent == null) changeEvent = new ChangeEvent(this); ((CellEditorListener)listeners[i+1]).editingCanceled(changeEvent); } } } } 

Answer 2

 includeColumn.setCellEditor(new DefaultCellEditor(new JCheckBox())); 

• it makes no sense to use or write Renderer and Editor for JCheckBox in JTable , put true / false , because JTable has built-in JCheckBox support like Renderer and Editor too

• override the correct column , returns Boolean.Class

• for JComboBox to read Using Combo Box as an editor

• all data is stored in XxxTableModel , and using DefaultTableModel events are displayed that are automatically displayed in JTables view

• all XxxTableModel updates must be performed in the Dispatch Event