java.lang.ClassNotFoundException: com.mysql.jdbc.Driver org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1386) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1232) org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:125) org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:63) java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319) java.lang.Class.forName0(Native Method) java.lang.Class.forName(Class.java:164) org.apache.jsp.BookEntryForm_jsp._jspService(BookEntryForm_jsp.java:50) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) note The full stack trace of the root cause is available in the Apache Tomcat/5.5.27 logs.