Why can't I use rs.deleteRow() method to delete a record?

Question

the code as such�F
<%
String sql="select id,name from test";
ResultSet rs = jconst.executeQuery(sql);
rs.next();
out.print(rs.getInt("id"));
try
rs.deleteRow();
catch (SQLException e)
out.print("can't delete record");
return;
out.print("success");
%>
the result is "can't delete record" ,why? I use mysql database�C"jconst" is the bean of connect to mysql database! In the "jconst" bean , I use such method to return Resultset :
public ResultSet executeQuery(String sql)
rs = null;
try
conn = DriverManager.getConnection(ConnStr);
Statement stmt = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_UPDATABLE);
rs = stmt.executeQuery(sql);
catch(SQLException ex)
System.err.println("aq.executeQuery: " + ex.getMessage());
return rs;

Answer 1

It's again the problem with not commiting the changes to databse. In order to commit changes to the database, you need to call the commit() of Connection explicitly or simply close the Statement and Connection objects in your bean.
After rs.deleteRow() in your jsp you call another method of your bean jconst.saveChanges(); and add this method in your bean.
public void saveChanges() {
try {
stmt.close();
conn.close()
} catch(SQLException sqle) {
//handle the exception
I hope this will work.
Sudha
PS: It's not a good practice to manipulate the database from your JSP. JSP is meant for presentation. You can do all these operations from bean itself.