Resin startup error expert !!!

Resin startup error expert !!! -- Linux general technology-Linux technology and application information. For details, refer to the following section. When resin is run for the first time, the following error occurs when resin-pro-3.1.0/is started,
#/Usr/local/resin/bin/httpd. sh start error message:
Java. lang. classNotFoundException: java. lang. enum not found in gnu. gcj. runtime. systemClassLoader {urls = [file :. /.. /lib/resin. jar], parent = gnu. gcj. runtime. extensionClassLoader {urls = [], parent = null }}
At java.net. URLClassLoader. findClass (libgcj. so.7)
At java. lang. ClassLoader. loadClass (libgcj. so.7)
At java. lang. ClassLoader. loadClass (libgcj. so.7)
At java. lang. VMClassLoader. defineClass (libgcj. so.7)
At java. lang. ClassLoader. defineClass (libgcj. so.7)
At java. security. SecureClassLoader. defineClass (libgcj. so.7)
At java.net. URLClassLoader. findClass (libgcj. so.7)
My environment is roughly like this:
JAVA_HOME =/usr/local/jdk
RESIN_HOME =/usr/local/resin
CLASSPATH = $ JAVA_HOME/lib: $ JAVA_HOME/lib/dt. jar: $ JAVA_HOME/lib/tools. jar: $ JAVA_HOME/lib/htmlconverter. jar: $ RESIN_HOME/lib:/usr/local/jdk/jdbc/mysql-connector-java-3.1.14-bin.jar:/usr/local/jre:/usr/local/jdk/bin
PATH = $ PATH: $ JAVA_HOME/bin: $ RESIN_HOME


Jdk-6-linux-i586.bin has been installed, java command can also run!
I don't know much about JAVA. I don't know what errors may happen or what else is missing. You must have encountered this problem frequently .!