To remove a entry

try
{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con=DriverManager.getConnection("jdbc:odbc:university","SYSTEM","12345");
PreparedStatement ps=con.prepareStatement("DELETE FROM COURSE WHERE COURSE_CODE=?");
ps.setString(1,request.getParameter("code"));
ps.executeUpdate();
ps.close();
con.close();
}
catch(Exception e)
{
out.println("error occured" +e);
}
%>