jcheckbox and jtable

JCheckBox is checked but it still shows its value as false when i use system.out.print .If the focus is lost but with JCheckBox still checked then it returns true. i.e when i check 2 checkbox the result showed is for first checkbox. the status of second checkbox is not shown. complete prog is shown below: pls run the prog and do rectify my mistake. any help is welcome.

public class check extends JFrame {
public check(){
setBounds(00,40,400,400);
Color c= new Color(160,200,100);
getContentPane().setBackground(c);
Color c3= new Color(0,50,50,2);
setTitle( "MARKING OF TARGET HABITATION");
setUndecorated(true);
getRootPane().setWindowDecorationStyle(JRootPane.P LAIN_DIALOG);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

String[] columnNames =
{"Country", "Capital", "Population in Millions",
"Democracy"};
Object[][] data = {
{"USA", "Washington DC", 280, new Boolean(false)},
{"Canada", "Ottawa", 32,new Boolean(false)},
{"United Kingdom", "London", 60, new Boolean(false)},
{"Germany", "Berlin", 83, new Boolean(false)},
{"France", "Paris", 60, new Boolean(false)},
{"Norway", "Oslo", 4.5, new Boolean(false)},
{"India", "New Deli", 1046,new Boolean(false)}
};

final JTable table = new JTable(data, columnNames){
public boolean isCellEditable(int rowIndex, int colIndex) {
return (colIndex==3);//Disallow the editing of any cell
} };
table.getColumnModel().getColumn(3).setCellEditor( new CheckBoxCellEditor());
table.getColumnModel().getColumn(3).setCellRendere r(new
CWCheckBoxRenderer());
JScrollPane scrollPane = new JScrollPane(table);
JButton button= new JButton("check");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e){
boolean[] rsel= new boolean[table.getRowCount()];
for(int i=0;i<table.getRowCount();i++){
rsel[i]=(boolean) table.getValueAt(i, 3);
if(rsel[i]){
System.out.println("checkbox selected at row" +" "+i+"is"+"
"+rsel[i]);
for(int col=0;col<=3;col++){
table.getValueAt(i, col);
System.out.println("data at row" +" "+i+"is"+"
"+table.getValueAt(i, col));
}
}
}
}
});
JPanel buttonpanel= new JPanel();
buttonpanel.add(button);
add(scrollPane,BorderLayout.CENTER);
add(buttonpanel,BorderLayout.SOUTH);
Color c1= new Color(160,200,100);
table.setBackground(c1);
buttonpanel.setBackground(c1);
setBackground(c1);
setVisible(true);
}

public static void main(String args[]){
new check();

}
class CheckBoxCellEditor extends AbstractCellEditor implements TableCellEditor {
private static final long serialVersionUID = 1L;
protected JCheckBox checkBox;
public CheckBoxCellEditor() {
checkBox = new JCheckBox();
checkBox.setHorizontalAlignment(SwingConstants.CEN TER);
// checkBox.setBackground( Color.white);
}

public Component getTableCellEditorComponent(
JTable table,
Object value,
boolean isSelected,
int row,
int column) {
checkBox.setSelected(((Boolean) value).booleanValue());
return checkBox;

}
public Object getCellEditorValue() {
return Boolean.valueOf(checkBox.isSelected());
}

}

class CWCheckBoxRenderer extends JCheckBox implements TableCellRenderer {
private static final long serialVersionUID = 1L;
Border border = new EmptyBorder(1,2,1,2);
public CWCheckBoxRenderer() {
super();
setOpaque(true);
setHorizontalAlignment(SwingConstants.CENTER);
}
public Component getTableCellRendererComponent(
JTable table,
Object value,
boolean isSelected,
boolean hasFocus,
int row,
int column) {
if (value instanceof Boolean) {
setSelected(((Boolean)value).booleanValue());
//setEnabled(table.isCellEditable(row, column));
setForeground(table.getForeground());
setBackground(table.getBackground());

}return this;
}
}
}

at least format your code because it is really hard to read.

I have checked your code.And its working. you did some casting mistakes.

Code:

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import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
import javax.swing.border.Border;
import javax.swing.border.EmptyBorder;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableCellRenderer;

public class check extends JFrame {
public check(){
setBounds(00,40,400,400);
Color c= new Color(160,200,100);
getContentPane().setBackground(c);
Color c3= new Color(0,50,50,2);
setTitle( "MARKING OF TARGET HABITATION");
setUndecorated(true);
getRootPane().setWindowDecorationStyle(JRootPane.PLAIN_DIALOG);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

String[] columnNames =
{"Country", "Capital", "Population in Millions",
"Democracy"};
Object[][] data = {
{"USA", "Washington DC", 280, new Boolean(false)},
{"Canada", "Ottawa", 32,new Boolean(false)},
{"United Kingdom", "London", 60, new Boolean(false)},
{"Germany", "Berlin", 83, new Boolean(false)},
{"France", "Paris", 60, new Boolean(false)},
{"Norway", "Oslo", 4.5, new Boolean(false)},
{"India", "New Deli", 1046,new Boolean(false)}
};

final JTable table = new JTable(data, columnNames){
public boolean isCellEditable(int rowIndex, int colIndex) {
return (colIndex==3);//Disallow the editing of any cell
} };
table.getColumnModel().getColumn(3).setCellEditor( (TableCellEditor) new CheckBoxCellEditor());
table.getColumnModel().getColumn(3).setCellRenderer((TableCellRenderer) new CWCheckBoxRenderer());
JScrollPane scrollPane = new JScrollPane(table);
JButton button= new JButton("check");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e){
boolean[] rsel= new boolean[table.getRowCount()];
for(int i=0;i<table.getRowCount();i++){
      rsel[i]=(Boolean) table.getValueAt(i, 3);
if(rsel[i]){
System.out.println("checkbox selected at row" +" "+i+"is"+" "+rsel[i]);
for(int col=0;col<=3;col++){
table.getValueAt(i, col);
System.out.println("data at row" +" "+i+"is"+" "+table.getValueAt(i, col));
}
}
}
}
});
JPanel buttonpanel= new JPanel();
buttonpanel.add(button);
add(scrollPane,BorderLayout.CENTER);
add(buttonpanel,BorderLayout.SOUTH);
Color c1= new Color(160,200,100);
table.setBackground(c1);
buttonpanel.setBackground(c1);
setBackground(c1);
setVisible(true);
}

public static void main(String args[]){
new check();

}

    private void r(CWCheckBoxRenderer cWCheckBoxRenderer) {
        throw new UnsupportedOperationException("Not yet implemented");
    }
class CheckBoxCellEditor extends AbstractCellEditor implements TableCellEditor {
private static final long serialVersionUID = 1L;
protected JCheckBox checkBox;
public CheckBoxCellEditor() {
checkBox = new JCheckBox();
checkBox.setHorizontalAlignment(SwingConstants.CENTER);
// checkBox.setBackground( Color.white);
}

public Component getTableCellEditorComponent(
JTable table,
Object value,
boolean isSelected,
int row,
int column) {
checkBox.setSelected(((Boolean) value).booleanValue());
return checkBox;

}
public Object getCellEditorValue() {
return Boolean.valueOf(checkBox.isSelected());
}

}

class CWCheckBoxRenderer extends JCheckBox implements TableCellRenderer {
private static final long serialVersionUID = 1L;
Border border = new EmptyBorder(1,2,1,2);
public CWCheckBoxRenderer() {
super();
setOpaque(true);
setHorizontalAlignment(SwingConstants.CENTER);
}
public Component getTableCellRendererComponent(
JTable table,
Object value,
boolean isSelected,
boolean hasFocus,
int row,
int column) {
if (value instanceof Boolean) {
setSelected(((Boolean)value).booleanValue());
//setEnabled(table.isCellEditable(row, column));
setForeground(table.getForeground());
setBackground(table.getBackground());

}return this;
}
}
}

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