sun.misc.CharacterDecoder and TOMCAT 4.0.1

[LeftBrain]

I having trouble using the sun.misc.Base64Encoder class in Tomcat 4.0.1 by itself. We are using it to encode certain information when a user log's in to our app in conjunction with a set of taglibs. When I develop the application in JBuilder5 and use it to launch the JSPs under Tomcat 4.0.1, there seems to be no problem. But in standalone mode, I can't make it work. I not sure if the following needs to be handled in the catalina.conf file and setting specific permission, or something else. Any help would be greatly appreciated.

TIA.

Security Violation, attempt to use Restricted Class: sun.misc.CharacterDecoder
java.security.AccessControlException: access denied (java.lang.RuntimePermission
accessClassInPackage.sun.misc)
at java.security.AccessControlContext.checkPermission(AccessControlConte
xt.java:272)
at java.security.AccessController.checkPermission(AccessController.java:
399)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:545)
at java.lang.SecurityManager.checkPackageAccess(SecurityManager.java:150
1)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoa
der.java:1236)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoa
der.java:1156)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313)
at java.lang.Class.newInstance0(Native Method)
at java.lang.Class.newInstance(Class.java:237)
at java.beans.Beans.instantiate(Beans.java:207)
at java.beans.Beans.instantiate(Beans.java:51)
at org.apache.jsp.CheckLogin$jsp._jspService(CheckLogin$jsp.java:81)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspSer
vlet.java:202)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:3
82)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:474)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.access$0(ApplicationF
ilterChain.java:197)
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilt
erChain.java:176)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:172)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:243)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:201)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:566)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(Authentica
torBase.java:472)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)

at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:
2344)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:164)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:566)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatche
rValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:564)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:564)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:
462)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:163)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)

at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcesso
r.java:1011)
at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.ja
va:1106)
at java.lang.Thread.run(Thread.java:484)
WebappClassLoader: Security Violation, attempt to use Restricted Class: sun.misc
.CharacterDecoder