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  1. ,
    via oracle.com by Unknown author

    App tries to load in a class through its string name using forName method in class Class, findSystemClass method in class ClassLoader, loadClass method in class ClassLoader but no definition for the class with the specified name could be found.

  2. ,

    If the missing Java class is not from your application code, then identify if it belongs to a 3rd party API you are using as per of your Java application. Once you identify it, add the missing JAR file(s) to your runtime classpath or web app (WAR/EAR).

Solutions on the web

via Coderanch by jaya lakshmi, 1 year ago
JDBC Driver class not found: org.gjt.mm.mysql.Driver
via Coderanch by damodar kumar, 1 year ago
JDBC Driver class not found: com.mysql.jdbc.Driver
via Stack Overflow by Aqif Hamid
, 2 years ago
JDBC Driver class not found: org.apache.derby.jdbc.ClientDriver
via Coderanch by Nageswar Kakolla, 1 year ago
JDBC Driver class not found: teradata.jdbc.driver.TeradataDriver
via GitHub by xyz123456789
, 2 years ago
JDBC Driver class not found: com.jdbc.mysql.Driver
via Stack Overflow by kavitha
, 7 months ago
org.hibernate.HibernateException: JDBC Driver class not found: org.gjt.mm.mysql.Driver at org.hibernate.connection.DriverManagerConnectionProvider.configure(DriverManagerConnectionProvider.java:66) at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:124) at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:56) at org.hibernate.cfg.SettingsFactory.createConnectionProvider(SettingsFactory.java:366) at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:60) at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:1881) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1174) at net.java.dev.hts.SessionFactoryDescriptor.openSession(SessionFactoryDescriptor.java:471) at net.java.dev.hts.SessionFactoryDescriptor.access$000(SessionFactoryDescriptor.java:54) at net.java.dev.hts.SessionFactoryDescriptor$1.run(SessionFactoryDescriptor.java:413) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:499) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:932)Caused by: java.lang.ClassNotFoundException: org.gjt.mm.mysql.Driver at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at org.netbeans.ProxyClassLoader.loadInOrder(ProxyClassLoader.java:582) at org.netbeans.ProxyClassLoader.smartLoadClass(ProxyClassLoader.java:531) at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:163) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:164) at org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:108) at org.hibernate.connection.DriverManagerConnectionProvider.configure(DriverManagerConnectionProvider.java:61)