Remap tab to space

Question

I'm simply trying to remap the tab key to input spaces, but aren't having much luck- any pointers would be appreciated:
public class MyTextPane
    extends JTextPane{
    public MyTextPane() {
      super();
      InputMap im = this.getInputMap();
      ActionMap am = this.getActionMap();
      //  Have the tab key work the same as the space key
      KeyStroke tab = KeyStroke.getKeyStroke("TAB");
      KeyStroke space = KeyStroke.getKeyStroke("SPACE");
      im.put(tab, im.get(space));
      am.put(im.get(space), am.get(space));
}I've also tried overriding the processKeyBinding method, but I get two spaces for every one I want:
public boolean processKeyBinding(KeyStroke ks, KeyEvent e, int condition, boolean pressed) {
    if (ks == KeyStroke.getKeyStroke(KeyEvent.VK_TAB,0)) {// TAB
      ks = KeyStroke.getKeyStroke(KeyEvent.VK_SPACE,  0);
      MyStyledDoc doc = (MyStyledDoc) this.getDocument();
     int pos = this.getCaretPosition();
      try{
         doc.insertString(pos, " ", null);
      }catch(BadLocationException ble){}
    return super.processKeyBinding(ks,e,condition,pressed);
  }

Answer 1

I'm simply trying to remap the tab key to input
spaces, but aren't having much luck- any pointers
would be appreciated:There is no entry in the ActionMap associated with the SPACE key, so your code does nothing but remove the action associated with TAB.
Here's some code that inserts a single SPACE when TAB is pressed:
KeyStroke tabStroke = KeyStroke.getKeyStroke(KeyEvent.VK_TAB,0);
        Action spaceAction = new AbstractAction() {
            public void actionPerformed(ActionEvent ae) {
                try {
                    textPane.getDocument().insertString(textPane.getCaretPosition(), " ", null);
                } catch (BadLocationException ble) {
                    System.out.println("This error shoul be impossible");
                    ble.printStackTrace();
        textPane.getInputMap().put(tabStroke, spaceAction);