/** * Sets the margin that ColumnGroup instance will use and all held TableColumns and/or * ColumnGroups. * * @param margin the margin */ public void setColumnMargin(int margin) { this.margin = margin; Iterator iter = v.iterator(); while (iter.hasNext()) { Object obj = iter.next(); if (obj instanceof ColumnGroup) { ((ColumnGroup) obj).setColumnMargin(margin); } } }