Classloader problems

Google

Mailing List

Home

Forum Home

JBoss - Java Application Server

Struts - A MVC web framework

Tomcat - JSP/Servlet container

iText - An open source PDF Java Library

JDOM - JDOM XML Parser

J2EE - A mailing list for Java(tm) 2 Platform, Enterprise Edition

J2EE Pattern - An interest list for Sun Java Center J2EE Pattern Catalog

Servlet - A mailing list for discussion about Sun Microsystem's Java Servlet API Technology

JSP - A mailing list about Java Server Pages specification and reference

Struts & Hibernate

Subjects

•	JSP editor plugin for eclipse ?
•	org apache jasper JasperException: Unable to compile class for JSP
•	Tomcat: Connection reset by peer: socket write error
•	Cannot retrieve definition for form bean null
•	Struts Tiles Tutorial (free Struts training)
•	Where do I download Tomcat 4 0 6?
•	Data Access Object (DAO) pattern, example DAO 's
•	Where to download Tomcat v 4 1 24 from?
•	Tomcat 5 0 16 Requested resource not available
•	Oracle Connection Pooling in 3 2 2
•	Servlet : Session invalidate
•	Servlet action is currently unavailable
•	Tomcat/Struts Unicode Encoding/Decoding problems
•	Tomcat and webapplication specific java library path
•	Running a Simple JMS Example
•	Mapping in workers2 properties
•	org apache jasper JasperException
•	Cannot find message resources under key org apache struts action MESSAGE
•	problem with html:text bean throwing exception
•	Cannot find message resources under key org apache struts action MESSAGE
•	invalid direct reference problem with solution
•	Tool for jsp debug Try Sysdeo Eclipse Plugin
•	Tomcat 5 Cannot load JDBC driver class 'null ' SQL state: null
•	weblogic ejbc
•	java properties file
•	Jboss 3 2 3 Coyote Can 't re
•	Tomcat 5, Apache2 and mod jk2 integration problem
•	JBoss example problem new to J2EE
•	url string for connecting jboss to oracle
•	Value attribute of <html:checkbox
•	javax servlet ServletException: BeanUtils populate
•	HTTP Status 404 The requested resource is not available
•	5 0 18: Windows XP Pro vs Windows 2000

Classloader problems

Classloader problems

2004-01-14 - By Jouko Johansson

Back

Reply: 1 2 3 4 5 6 7 8

Hi,

We are using Tomcat 4.1.29. There randomly occurs following kind of
error in some page which is rarely used:

java.lang.NullPointerException

Source code of java.lang.NullPointerException

at org.apache.jasper.servlet.JasperLoader

Source code of org.apache.jasper.servlet.JasperLoader

(JasperLoader.java:179)
at org.apache.jasper.servlet.JasperLoader

(JasperLoader.java:131)
at java.lang.ClassLoader

(ClassLoader.java:302)

After restarting of the tomcat, the system works fine, but it may explode again
in different JSP-page. Usuallly it runs correctly about 5 hours.

System Information
Tomcat: tomcat 4.1.29

JDK:

java version "1.4.2_03"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02)
Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode)

OS: Linux 2.4.20 #2 SMP

Thank you for your help in advance.

Yours,

Jouko Johansson

-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ------
To unsubscribe, e-mail: tomcat-user-unsubscribe@(protected)
For additional commands, e-mail: tomcat-user-help@(protected)