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

  public class Table
  {
  public static void main(String[] args)
  {
  JFrame frame = new JFrame("Table");
  frame.addWindowListener( new WindowAdapter() {
  public void windowClosing(WindowEvent e)
  {
  Window win = e.getWindow();
  win.setVisible(false);
  win.dispose();
  System.exit(0);
  }
  } );
  
  JTable table = new JTable( 6,4 )
  {
  public TableCellRenderer getCellRenderer(int row, int column) {
  TableColumn tableColumn = getColumnModel().getColumn(column);
  TableCellRenderer renderer = tableColumn.getCellRenderer();
  if (renderer == null) {
  Class c = getColumnClass(column);
  if( c.equals(Object.class) )
  {
  Object o = getValueAt(row,column);
  if( o != null )
  c = getValueAt(row,column).getClass();
  }
  renderer = getDefaultRenderer(c);
  }
  return renderer;
  }
  
  public TableCellEditor getCellEditor(int row, int column) {
  TableColumn tableColumn = getColumnModel().getColumn(column);
  TableCellEditor editor = tableColumn.getCellEditor();
  if (editor == null) {
  Class c = getColumnClass(column);
  if( c.equals(Object.class) )
  {
  Object o = getValueAt(row,column);
  if( o != null )
  c = getValueAt(row,column).getClass();
  }
  editor = getDefaultEditor(c);
  }
  return editor;
  }
  
  };
  
  // Buttons
  table.setValueAt( new JButton("Button"), 0, 0 );
  table.setValueAt( new JButton("Button"), 0, 1 );
  
  
  // Combobox
  JComboBox combo = new JComboBox( new String[] {"First", "Second", "Third"} );
  table.setValueAt( combo, 1, 1 );
  
  // Labels
  table.setValueAt( new JLabel("Label"), 1, 0 );
  JLabel label = new JLabel( "Label", new ImageIcon( table.getClass().getResource("new.gif") ),
  JLabel.LEFT);
  table.setValueAt( label, 1, 2 );
  
  // Scrollbar
  table.setValueAt( new JScrollBar(JScrollBar.HORIZONTAL), 2,1 );
  
  // RadioButtons
  JRadioButton b1 = new JRadioButton( "Group1 Button1" );
  JRadioButton b2 = new JRadioButton( "Group1 Button2" );
  JRadioButton b3 = new JRadioButton( "Group1 Button3" );
  
  ButtonGroup g1 = new ButtonGroup();
  g1.add( b1 );
  g1.add( b2 );
  g1.add( b3 );
  
  table.setValueAt( b1, 3, 0 );
  table.setValueAt( b2, 3, 1 );
  table.setValueAt( b3, 3, 2 );
  
  //checkbox
  JCheckBox c1 = new JCheckBox( "Check box1 " );
  JCheckBox c2 = new JCheckBox( "Check box2" );
  JCheckBox c3 = new JCheckBox( "Check box3" );
  table.setValueAt( c1, 4, 0 );
  table.setValueAt( c2, 4, 1 );
  table.setValueAt( c3,4, 2 );
  
  table.setDefaultRenderer( JComponent.class, new JComponentCellRenderer() );
  table.setDefaultEditor( JComponent.class, new JComponentCellEditor() );
  JScrollPane sp = new JScrollPane(table);
  
  
  frame.getContentPane().add( sp );
  frame.pack();
  frame.show();
  }
  }
  

  class JComponentCellRenderer implements TableCellRenderer
  {
  public Component getTableCellRendererComponent(JTable table, Object value,
  boolean isSelected, boolean hasFocus, int row, int column) {
  return (JComponent)value;
  }
  }