Best books about JAVA programming:

• Head First JAVA, Second Editon
• Effective Java Programming Language Guide
• Professional Java, JDK 5 Edition
• Ivor Horton's Beginning Java 2, JDK 5 Edition

JAVA JTable JComponent

The following code show to add any JComponent in a JTablecell. Sample shows Jbuttons, Jlabels, Jcombobox, Jscrolbar, JCheckbox and radio buttons . These components behave in the regular manner to mouse actions.

The JComponentCellRenderer implements the TableCellRenderer and its single method simply returns the component in the cell to be rendered.

• Table.java
• JComponentCellEditor.java
  
  
  
  
  import java.awt.Component;
  import java.awt.event.*;
  import java.awt.AWTEvent;
  import java.lang.Boolean;
  import javax.swing.table.*;
  import javax.swing.event.*;
  import java.util.EventObject;
  import javax.swing.tree.*;
  import java.io.Serializable;
  import javax.swing.*;
  

  public class JComponentCellEditor implements TableCellEditor, TreeCellEditor,
  Serializable {
  
  protected EventListenerList listenerList = new EventListenerList();
  transient protected ChangeEvent changeEvent = null;
  
  protected JComponent editorComponent = null;
  protected JComponent container = null; // Can be tree or table
  
  
  public Component getComponent() {
  return editorComponent;
  }
  
  
  public Object getCellEditorValue() {
  return editorComponent;
  }
  
  public boolean isCellEditable(EventObject anEvent) {
  return true;
  }
  
  public boolean shouldSelectCell(EventObject anEvent) {
  if( editorComponent != null && anEvent instanceof MouseEvent
  && ((MouseEvent)anEvent).getID() == MouseEvent.MOUSE_PRESSED )
  {
  Component dispatchComponent = SwingUtilities.getDeepestComponentAt(editorComponent, 3, 3 );
  MouseEvent e = (MouseEvent)anEvent;
  MouseEvent e2 = new MouseEvent( dispatchComponent, MouseEvent.MOUSE_RELEASED,
  e.getWhen() + 100000, e.getModifiers(), 3, 3, e.getClickCount(),
  e.isPopupTrigger() );
  dispatchComponent.dispatchEvent(e2);
  e2 = new MouseEvent( dispatchComponent, MouseEvent.MOUSE_CLICKED,
  e.getWhen() + 100001, e.getModifiers(), 3, 3, 1,
  e.isPopupTrigger() );
  dispatchComponent.dispatchEvent(e2);
  }
  return false;
  }
  
  public boolean stopCellEditing() {
  fireEditingStopped();
  return true;
  }
  
  public void cancelCellEditing() {
  fireEditingCanceled();
  }
  
  public void addCellEditorListener(CellEditorListener l) {
  listenerList.add(CellEditorListener.class, l);
  }
  
  public void removeCellEditorListener(CellEditorListener l) {
  listenerList.remove(CellEditorListener.class, l);
  }
  
  protected void fireEditingStopped() {
  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);
  }
  }
  }
  
  // implements javax.swing.tree.TreeCellEditor
  public Component getTreeCellEditorComponent(JTree tree, Object value,
  boolean isSelected, boolean expanded, boolean leaf, int row) {
  String stringValue = tree.convertValueToText(value, isSelected,
  expanded, leaf, row, false);
  
  editorComponent = (JComponent)value;
  container = tree;
  return editorComponent;
  }
  
  // implements javax.swing.table.TableCellEditor
  public Component getTableCellEditorComponent(JTable table, Object value,
  boolean isSelected, int row, int column) {
  
  editorComponent = (JComponent)value;
  container = table;
  return editorComponent;
  }
  
  } // End of class JComponentCellEditor