JNI Configuration

[fred]

Hello,
excuse me for my english...
I see the JNI Configuration and in the file "workers2.properties", I see:
OPT=-Djava.class.path=${TOMCAT_HOME}/lib/tomcat-jni.jar;${TOMCAT_HOME}/lib/tomcat.jar

But can you tell where find the "tomcat-jni.jar" and the "tomcat.jar" because they are 
not on my computer...
Thank you...