Author: Banu

It has multiple radio buttons in a button group for a cell. I have used Cell Renderer and Cell Editor for the table.

To make it simple I have it based on the one already in Codeguru.com that explains how to use radio buttons as cell editor and renderer.

JButtonGroupTableExample.java

     // File: JButtonGroupTableExample.java
     /* (swing1.1beta3) */
     //package jp.gr.java_conf.tame.swing.examples;

     /**
      * @version 1.0 12/03/98
      */

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

     public class JButtonGroupTableExample extends JFrame 
     {
	


       
       public JButtonGroupTableExample()
       {
         super( "JButtonGroupTable Example " );
         UIDefaults ui = UIManager.getLookAndFeel().getDefaults();    
         UIManager.put("RadioButton.focus", ui.getColor("control"));
		
		
         

         DefaultTableModel dm = new DefaultTableModel();
         dm.setDataVector(
           new Object[][]{
             {"Do you like dogs?","5"},
             {"Do you like cats?","4"},
             {"Do you like Windows?","1"},
             {"Do you like Java?","5"},
             {"Do you like Swing?","4"}},
           new Object[]{"Questions","Answers"});
                          
         JTable table = new JTable(dm) {
           public void tableChanged(TableModelEvent e) {
             super.tableChanged(e);
             repaint();
           }
         };
         
         table.getColumn("Answers").setCellRenderer(new RadioButtonRenderer());
         table.setRowHeight(30);
	   table.getColumn("Answers").setCellEditor(new RadioButtonEditor(new JCheckBox()));
         JScrollPane scroll = new JScrollPane(table);
         getContentPane().add( scroll );
         setSize( 1000, 200 );
         setVisible(true);
       }

	 

       public static void main(String[] args) {
         JButtonGroupTableExample frame = new JButtonGroupTableExample();
         frame.addWindowListener(new WindowAdapter() {
           public void windowClosing(WindowEvent e) {
             System.exit(0);
           }
         });
       }
     }

     class RadioButtonRenderer implements TableCellRenderer {
	 public JPanel pnl = new JPanel();
	 public ButtonGroup group1 = new ButtonGroup();
	 public JRadioButton btnFive = new JRadioButton("Very Very Much");
	 public JRadioButton btnFour = new JRadioButton("Very Much");
	 public JRadioButton btnThree = new JRadioButton("Okay");
	 public JRadioButton btnTwo = new JRadioButton("Not Much");
       public JRadioButton btnOne = new JRadioButton("Hate it");

       public Component getTableCellRendererComponent(JTable table, Object value,
                        boolean isSelected, boolean hasFocus, int row, int column) {
         if (value==null) return null;
		
         	group1.add(btnFive );
	 	group1.add(btnFour );
		group1.add(btnThree );
	 	group1.add(btnTwo );
		group1.add(btnOne );

	
		pnl.add(btnFive );
	 	pnl.add(btnFour );
		pnl.add(btnThree );
	 	pnl.add(btnTwo );
		pnl.add(btnOne );


	 	btnOne.setSelected(false);
	btnTwo .setSelected(false);
	btnThree .setSelected(false);
	btnFour .setSelected(false);
	btnFive .setSelected(false);
	switch(Integer.parseInt((String)value))
	{
		

		case 1:
		   btnOne.setSelected(true);
		   break;
		case 2:
		   btnTwo.setSelected(true);
		   break;	
		case 3:
		   btnThree.setSelected(true);
		   break;	
		case 4:
		   btnFour.setSelected(true);
		   break;	
		case 5:
		   btnFive.setSelected(true);
		   break;	
	}
	

	 
         return pnl;
       }
     }

     class RadioButtonEditor extends    DefaultCellEditor
                             implements ItemListener {
	public JPanel pnl = new JPanel();
	 public ButtonGroup group1 = new ButtonGroup();
	 public JRadioButton btnFive = new JRadioButton("Very Very Much");
	 public JRadioButton btnFour = new JRadioButton("Very Much");
	 public JRadioButton btnThree = new JRadioButton("Okay");
	 public JRadioButton btnTwo = new JRadioButton("Not Much");
       public JRadioButton btnOne = new JRadioButton("Hate it");
        
       public RadioButtonEditor(JCheckBox checkBox) {
         super(checkBox);
       }

       public Component getTableCellEditorComponent(JTable table, Object value,
                        boolean isSelected, int row, int column) {
         if (value==null) return null;
         
		group1.add(btnFive );
	 	group1.add(btnFour );
		group1.add(btnThree );
	 	group1.add(btnTwo );
		group1.add(btnOne );

	
		pnl.add(btnFive );
	 	pnl.add(btnFour );
		pnl.add(btnThree );
	 	pnl.add(btnTwo );
		pnl.add(btnOne );


		btnOne.setSelected(false);
		btnTwo .setSelected(false);
		btnThree .setSelected(false);
		btnFour .setSelected(false);
		btnFive .setSelected(false);
	
	switch(Integer.parseInt((String)value))	{
		

		case 1:
		   btnOne.setSelected(true);
		   break;
		case 2:
		   btnTwo.setSelected(true);
		   break;	
		case 3:
		   btnThree.setSelected(true);
		   break;	
		case 4:
		   btnFour.setSelected(true);
		   break;	
		case 5:
		   btnFive.setSelected(true);
		   break;	
	}
	

	
         return pnl;
       }

       public Object getCellEditorValue() {
         if(btnFive.isSelected() == true)
		return "5";
	   if(btnFour.isSelected() == true)
		return "4";

         if(btnThree.isSelected() == true)
		return "3";

         if(btnTwo.isSelected() == true)
		return "2";

         if(btnOne.isSelected() == true)
		return "1";
	return "";
	   
       }

       public void itemStateChanged(ItemEvent e) {
         super.fireEditingStopped();
       }
     }

     

Posted On: 4-Aug-1999

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