How to clear Jtable’s cell when starting typing?

Question

How can I clear the cell in Jtable by starting to type in an equal cell in excel.

For example, I place the cursor in a cell and when starting to type the cell enters editing mode, at this precise moment of a listener that when entering the cell the content is replaced with what was typed, remembering when giving two click with the mouse the contents cannot clean, only when typing something.

Answer 1

Here is the solution, not so obvious but that works.

public class MyJTable extends JTable {

    boolean isSelectAll = true;


    @Override
    public boolean editCellAt(int row, int column, EventObject e) {
        boolean result = super.editCellAt(row, column, e);
        selectAll(e);
        return result;
    }

    private void selectAll(EventObject e) {
        final Component editor = getEditorComponent();
        if (editor == null
                || !(editor instanceof JTextComponent)) {
            return;
        }

        if (e == null) {
            ((JTextComponent) editor).selectAll();
            return;
        }

        //  Modo de edição ao pressionar qualquer tecla
        if (e instanceof KeyEvent && isSelectAll) {
            ((JTextComponent) editor).selectAll();
            return;
        }

        //  Modo de edição ao pressionar F2
        if (e instanceof ActionEvent && isSelectAll) {
            ((JTextComponent) editor).selectAll();
            return;
        }

        //   Modo de edição ao pressionar ao dar 2 cliques com o mouse
        if (e instanceof MouseEvent && isSelectAll) {
            SwingUtilities.invokeLater(new Runnable() {
                public void run() {
                    ((JTextComponent) editor).selectAll();
                }
            });
        }
    }

    /*
     *  habilitar/desabilitar modo de edição para selecionar tudo ao entrar na célula
     */
    public void setSelectAllForEdit(boolean isSelectAll) {
      this.isSelectAll = isSelectAll;
    }

}

SOURCE: https://tips4java.wordpress.com/2008/10/20/table-select-all-editor/