Serlvet -Jpa integration getting error

[nisu pathak]

hello.i am trying to is integrate jpa into my servlets .i am posting my code as below:

Persistence.xml <?xml version="1.0" encoding="UTF-8"?> <persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"> <persistence-unit name="ServletJpa"> <description>my persistant unit</description> <class>org.jpa.UserData</class> <properties> <property name="javax.persistence.jdbc.driver" value="org.apache.derby.jdbc.ClientDriver" /> <property name="javax.persistence.jdbc.url" value="jdbc:derby:localhost:1527/sample;create=true" /> <!-- EclipseLink should create the database schema automatically eclipse link is a jpa provider--> <property name="eclipselink.ddl-generation" value="create-tables" /> <property name="eclipselink.ddl-generation.output-mode" value="database" /> </properties> </persistence-unit> </persistence>

i am getting following error
javax.persistence.PersistenceException: Exception [EclipseLink-4021] (Eclipse Persistence Services - 2.5.0.v20130507-3faac2b): org.eclipse.persistence.exceptions.DatabaseException
Exception Description: Unable to acquire a connection from driver [org.apache.derby.jdbc.ClientDriver], user [] and URL [jdbc:derby:localhost:1527/sample;create=true]. Verify that you have set the expected driver class and URL. Check your login, persistence.xml or sessions.xml resource. The jdbc.driver property should be set to a class that is compatible with your database platform
Internal Exception: java.sql.SQLException: No suitable driver found for jdbc:derby:localhost:1527/sample;create=true
Error Code: 0

please need to ocmplete as early as possible .early suggestions are most welcomed..

Thanks in advance.

[Ulf Dittmer]

I have taken the liberty of removing a bunch of stuff from your post that has nothing to do with the problem. The salient message is this:

No suitable driver found for jdbc:derby:localhost:1527/sample;create=true

Either you do not have the Derby JDBC driver in the classpath, or the URL is not correct. This page indicates that the latter is indeed the case.