tm.setValueAt("A", 0, 0);
tm.setValueAt(Boolean.TRUE, 0, 1);
tm.setValueAt(new Date(0l), 0, 2);
JTable table = new JTable(tm);
table.getColumnModel().getColumn(2).setHeaderRenderer(
new MyBooleanTableCellRenderer());
AccessibleContext tableac = table.getAccessibleContext();
harness.check(tableac.getClass().getName().endsWith("AccessibleJTable"));
AccessibleTable at = tableac.getAccessibleTable().getAccessibleColumnHeader();
Accessible accessibleCell0 = at.getAccessibleAt(0, 0);
harness.check(accessibleCell0.getAccessibleContext().getAccessibleRole(),