JTable - Check box in column header with sorting

Question

Hello
I have 3 problems/questions.
1. When adding sorting to a table with
setAutoCreateRowSorter(true);and you click on a column header, normally a sorting arrow will appear, and indicate in what direction its sorting,
but in the column head with the checkbox, even though the sorting works, the arrow will never appear. Is there anyway to fix this?
2. Is there anyway to get the checkboxes in the table cells to be aligned left (I dont mean the columnheader checkbox, but the ones below)?
3. When you click on the columnheader to either sort or check the checkbox, you will have to wait about a second between each click, or else it won't react and won't sort. sometimes you will have to click twice for it to react. If you click a lot of times fast, then it won't react until you stop for a second, and click again, though it will react only on the first click, but not the secont, third, fourh, and so on, until you stop for a second. Is there anyway to fix this, or atleast make it have a better reaction time?
This is the code for creating the table:
public class Example extends JFrame{
    private Container container;
    private JTable exampleTable;
    public Example(){
        container = getContentPane();
        ExamleTableModel examleTableModel = new ExamleTableModel();
        exampleTable = new JTable(examleTableModel);
        TableColumn tc = exampleTable.getColumnModel().getColumn(0);
        tc.setCellEditor(exampleTable.getDefaultEditor(Boolean.class)); 
        tc.setCellRenderer(exampleTable.getDefaultRenderer(Boolean.class)); 
        tc.setHeaderRenderer(new CheckBoxHeader(new MyItemListener()));
        container.add(new JScrollPane(exampleTable), BorderLayout.SOUTH);
        exampleTable.setAutoCreateRowSorter(true);
        setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );       
        this.pack();
        setSize(500,500);
        setVisible(true);
    }This is the code for the checkboxheader:
    class MyItemListener implements ItemListener 
            public void itemStateChanged(ItemEvent e) { 
                Object source = e.getSource(); 
                if (source instanceof AbstractButton == false) return; 
                boolean checked = e.getStateChange() == ItemEvent.SELECTED; 
                for(int a = 0, b = exampleTable.getRowCount(); a < b; a++) { 
                    for(int c = 0, d = exampleTable.getRowCount(); c < d; c++) { 
                        if(exampleTable.getColumnName(c).equals("")){
                            exampleTable.setValueAt(new Boolean(checked),a,c);
    class CheckBoxHeader extends JCheckBox 
        implements TableCellRenderer, MouseListener {
        protected CheckBoxHeader rendererComponent; 
        protected int column; 
        protected boolean mousePressed = false; 
        public CheckBoxHeader(ItemListener itemListener) { 
            rendererComponent = this; 
            this.setHorizontalAlignment(JLabel.LEFT);
            rendererComponent.addItemListener(itemListener); 
        public Component getTableCellRendererComponent( 
                JTable table, Object value, 
                boolean isSelected, boolean hasFocus, int row, int column) { 
            if (table != null) { 
                JTableHeader header = table.getTableHeader(); 
                if (header != null) { 
                    rendererComponent.setForeground(header.getForeground()); 
                    rendererComponent.setBackground(header.getBackground()); 
                    rendererComponent.setFont(header.getFont()); 
                    header.addMouseListener(rendererComponent); 
            setColumn(column); 
            rendererComponent.setText("");
            setBorder(UIManager.getBorder("TableHeader.cellBorder")); 
            return rendererComponent; 
        protected void setColumn(int column){this.column = column;} 
        public int getColumn(){return column;} 
        protected void handleClickEvent(MouseEvent e) { 
            if (mousePressed) { 
                mousePressed=false; 
                JTableHeader header = (JTableHeader)(e.getSource()); 
                JTable tableView = header.getTable(); 
                TableColumnModel columnModel = tableView.getColumnModel(); 
                int viewColumn = columnModel.getColumnIndexAtX(e.getX()); 
                int column = tableView.convertColumnIndexToModel(viewColumn); 
                if (viewColumn == this.column && e.getClickCount() == 1 && column != -1) { 
                    doClick(); 
        public void mouseClicked(MouseEvent e) { 
            boolean active=true;
            JTableHeader header = (JTableHeader)(e.getSource()); 
            switch (e.getID()) {
            case MouseEvent.MOUSE_CLICKED:
            case MouseEvent.MOUSE_PRESSED:
            case MouseEvent.MOUSE_RELEASED:
                JTable tableView = header.getTable();
                TableColumnModel columnModel = tableView.getColumnModel();
                int viewColumn = columnModel.getColumnIndexAtX(e.getX());
                int column = tableView.convertColumnIndexToModel(viewColumn);
                Rectangle bounds = tableView.getCellRect(-1, column, false);
                if (e.getX() > bounds.x + 16) { // only if one the checkbox
                    if (e.getID() == MouseEvent.MOUSE_CLICKED) {active = false;}
                }else{active=true;}
            if(active){
                handleClickEvent(e); 
                ((JTableHeader)e.getSource()).repaint();   
        public void mousePressed(MouseEvent e){mousePressed = true;} 
        public void mouseReleased(MouseEvent e){} 
        public void mouseEntered(MouseEvent e){} 
        public void mouseExited(MouseEvent e){} 
}If you want the code for the ExamleTableModel, I will post it if you ask (having trouble with the character limit).

Answer 1

What are you supposed to cast it to? I might have tried to cast it to something wrong.
I tried
TableCellRenderer tcr = table.getDefaultRenderer(Boolean.class);
((DefaultTableCellRenderer)tcr).setHorizontalAlignment(SwingConstants.LEFT);and that gave me a ClassCastException. But I might have been trying to cast it to the wrong thing.