public void loadXMLFile(String fileName) {
try {
m_TestRequirementModel.removeTableModelListener(tableListener);
m_TestRequirementTable.getColumnModel().removeColumnModelListener(m_TableColumnModelListener);
XMLFile xmlFile = new XMLFile(fileName);
m_TestRequirementModel.setRowCount(0);
m_TestRequirementModel.setColumnCount(0);
currentXMLFile = fileName;
m_TestRequirementModel.setRequirements(xmlFile.getXMLDataSet());
Enumeration<TableColumn> columns = m_TestRequirementTable.getColumnModel().getColumns();
while (columns.hasMoreElements()) {
TableColumn hcol = columns.nextElement();
hcol.setHeaderRenderer(new MyTableHeaderRenderer());