Class loading for J2SE classes in web-inf lib

[Hector Adolfo Alonso <al...@consist.com.ar>]

Hello:
   I've have a doubt about using xerces.jar in Tomcat 4.1.27.
Suppose I'm using JDK 1.3.1, with xerces.jar put in WEB-INF\lib, and
Tomcat default installation. xerces-jar's classes are used when they
are required.

   I've read carefully the document in
http://jakarta.apache.org/tomcat/tomcat-4.1-doc/class-loader-howto.html

   My doubt is related to the topic "J2SE classses and extensions": if I use
JDK 1.4.1, xerces.jar's classes won't be loaded from web-inf libraries, 
because
they are part of JDK libraries (this is different for JDK 1.3.1).

   Could someane confirm this.

   In default Tomcat installation, they will be loaded instead from common
endorsed jar directory.

   Thanks in advance.

Hector./

Re: Class loading for J2SE classes in web-inf lib

[Jacob Kjome <ho...@visi.com>]

Don't ever put endorsed libraries in WEB-INF/lib, even under 
JDk1.3.1.  Just take the one from CATALINA_HOME/common/endorsed.  It is 
usually the most up-to-date anyway and you can always put your own version 
there.  Putting the xml parser in WEB-INF/lib will only cause you problems.

Jake

At 12:52 PM 8/28/2003 -0300, you wrote:
>Hello:
>   I've have a doubt about using xerces.jar in Tomcat 4.1.27.
>Suppose I'm using JDK 1.3.1, with xerces.jar put in WEB-INF\lib, and
>Tomcat default installation. xerces-jar's classes are used when they
>are required.
>
>   I've read carefully the document in
>http://jakarta.apache.org/tomcat/tomcat-4.1-doc/class-loader-howto.html
>
>   My doubt is related to the topic "J2SE classses and extensions": if I use
>JDK 1.4.1, xerces.jar's classes won't be loaded from web-inf libraries, 
>because
>they are part of JDK libraries (this is different for JDK 1.3.1).
>
>   Could someane confirm this.
>
>   In default Tomcat installation, they will be loaded instead from common
>endorsed jar directory.
>
>   Thanks in advance.
>
>Hector./
>