After that I updated the my java version 1.6.0_13 to version 1.6.0_14 using apt-get at ubuntu, my web application stated displaying the follow error at the browser:

HTTP Status 500 -

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: Unable to compile class for JSP

Generated servlet error:
/opt/programs/servers/jboss-3.2.8.SP1/server/default/work/jboss.web/localhost/xxx/org/apache/jsp/principal_jsp.java:142: handlePageException(java.lang.Exception) in javax.servlet.jsp.PageContext cannot be applied to (java.lang.Throwable)
 if (_jspx_page_context != null) _jspx_page_context.handlePageException(t);
 ^
1 error



 org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
 org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:332)
 org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:437)
 org.apache.jasper.compiler.Compiler.compile(Compiler.java:497)
 org.apache.jasper.compiler.Compiler.compile(Compiler.java:476)
 org.apache.jasper.compiler.Compiler.compile(Compiler.java:464)
 org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)
 org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
 org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
 org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
 org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

note The full stack trace of the root cause is available in the Apache Tomcat/5.0.30 logs.
Apache Tomcat/5.0.30

Observations:

1) Jboss 3.2.8

2) I need to compile to jre1.4.
So, to compile to jre1.4, using the compiler java 1.6, I configured at the build.xml so:

<target name="compile" depends="init,parser">
 <javac source="1.4" srcdir="${src.dir}" destdir="${classes.dir}" debug="on" optimize="off" deprecation="off" encoding="ISO-8859-1">
 <classpath refid="class.path" />
 </javac>
</target>

Before the update this error didn't occur!
And I do nothing change at application!

Any informations about this error?

now, thanks!