New to Java

Hello,
Even though I've learned Java, I didn't work on it, I have given the application to do changes, I just started with NetBeans, I've added the library files also..But I am getting this error below. Can anyone help me what's this error is all about

init:
deps-jar:
compile:
run:
INFO QueryLogger: Created connection pool: jdbc:mysql://localhost/project
Driver class: com.mysql.jdbc.Driver
Min. connections in the pool: 1
Max. connections in the pool: 15
INFO QueryLogger: *** Connecting: FAILURE.
java.sql.SQLException: Can not load JDBC driver named 'com.mysql.jdbc.Driver': com.mysql.jdbc.Driver
at org.objectstyle.cayenne.conn.DriverDataSource.<init>(DriverDataSource.java:96)
Exception in thread "AWT-EventQueue-0" org.objectstyle.cayenne.ConfigurationException: [v.1.2M7 November 7 2005] Error during Configuration initialization. [v.1.2M7 November 7 2005] Load failures. Main configuration class: org.objectstyle.cayenne.conf.FileConfiguration, details:
at org.objectstyle.cayenne.conn.PoolManager.<init>(PoolManager.java:147)
domain.node.name=projectDB, domain.node.datasource=projectDB.driver.xml, reason: DataSource load failed - Can not load JDBC driver named 'com.mysql.jdbc.Driver': com.mysql.jdbc.Driver
at org.objectstyle.cayenne.conf.DriverDataSourceFactory.getDataSource(DriverDataSourceFactory.java:121)
at org.objectstyle.cayenne.conf.Configuration.initializeSharedConfiguration(Configuration.java:321)
at org.objectstyle.cayenne.conf.RuntimeLoadDelegate.shouldLoadDataNode(RuntimeLoadDelegate.java:315)
at org.kmbc.project.ui.NewMainScreen_Tabs$41.run(NewMainScreen_Tabs.java:1168)
at org.objectstyle.cayenne.conf.ConfigLoader$NodeHandler.init(ConfigLoader.java:366)
at org.objectstyle.cayenne.conf.ConfigLoader$DomainHandler.startElement(ConfigLoader.java:255)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:533)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:330)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(XMLDocumentFragmentScannerImpl.java:1693)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:368)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
Caused by: org.objectstyle.cayenne.ConfigurationException: [v.1.2M7 November 7 2005] Load failures. Main configuration class: org.objectstyle.cayenne.conf.FileConfiguration, details:
domain.node.name=projectDB, domain.node.datasource=projectDB.driver.xml, reason: DataSource load failed - Can not load JDBC driver named 'com.mysql.jdbc.Driver': com.mysql.jdbc.Driver
at org.objectstyle.cayenne.conf.RuntimeLoadDelegate.finishedLoading(RuntimeLoadDelegate.java:472)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:834)
at org.objectstyle.cayenne.conf.ConfigLoader.loadDomains(ConfigLoader.java:115)
at org.objectstyle.cayenne.conf.DefaultConfiguration.initialize(DefaultConfiguration.java:197)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)
at org.objectstyle.cayenne.conf.Configuration.initializeSharedConfiguration(Configuration.java:312)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:148)
... 8 more
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1242)
at org.objectstyle.cayenne.conf.ConfigLoader.loadDomains(ConfigLoader.java:114)
at org.objectstyle.cayenne.conf.DefaultConfiguration.initialize(DefaultConfiguration.java:197)
at org.objectstyle.cayenne.conf.Configuration.initializeSharedConfiguration(Configuration.java:312)
at org.elto.project.ui.NewMainScreen_Tabs$41.run(NewMainScreen_Tabs.java:1168)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)