With JExcel, you can hide/unhide columns like you would do in Excel. This way of hiding the columns will not affect the datasource which makes it possible for every user to hide columns in his/her workbook to create unique view.
To hide a column, simply click on the icon (1) and select the option Hide.
And to display all the hidden columns just click on the Show hidden columns link Above the column names.
To see which columns are hidden hover on the link Show hidden columns link..
If you want to display a new column from the datasource: