Problem in update to database

Question

Dear sir,
I am making project on library management system using Netbeans 6.1
in which i am able to connect my databases to the jtable in the frame sucessfully(jtable is used to display records of students who jahave issued the books) but when
I peform update to database
using following statements it gives me error that "no suitable driver found for java:derby:lib" in which lib is my database name.
private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {                                                String url = "jdbc:derby:lib";         try {               try {               Class.forName("org.apache.derby.jdbc.ClientDriver");             } catch (ClassNotFoundException ex) {                 Logger.getLogger(delUI.class.getName()).log(Level.SEVERE, null, ex);             }             Connection con = DriverManager.getConnection(url,"lib","lib");             java.sql.Statement stmt =  con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,                                     ResultSet.CONCUR_UPDATABLE);           ResultSet srs = stmt.executeQuery("delete * from student where sholarno="+jTextField2.getText());         } catch (SQLException ex) {             Logger.getLogger(delUI.class.getName()).log(Level.SEVERE, null, ex);         }       }                                               
Also i observe that when I build the program the build is succesfull &
there is one following statement written which says that it is not copying the libraries:
D:\Program Files\glassfish-v2ur2\javadb\lib\derbyclient.jar is a directory or can't be read. Not copying the libraries.
Building jar: C:\Documents and Settings\super\My Documents\NetBeansProjects\LibMan\dist\LibMan.jar
Not copying the libraries.
Sir, please help me to solve the above problem . Please tell me that it is not copying the files whether this causes the problem or anything is missing.

Answer 1

The url listed is for an embedded Driver, but your loading the ClientDriver. So, which is it?