Dynamically changing the Table Column Header

 
import oracle.apps.fnd.framework.webui.beans.table.OAAdvancedTableBean;
import oracle.apps.fnd.framework.webui.beans.table.OAColumnBean;
import oracle.apps.fnd.framework.webui.beans.table.OASortableHeaderBean;

OAAdvancedTableBean tableBean = (OAAdvancedTableBean)webBean.findIndexedChildRecursive("AdvTabRN");
OAColumnBean columnBean = (OAColumnBean)tableBean.findIndexedChildRecursive("empidCol");
OASortableHeaderBean colHeaderBean = (OASortableHeaderBean)columnBean.getColumnHeader();
colHeaderBean.setText("<newText>");