Unable to find a javac compiler;

[djos]

Hello,

I am running JBOSS 4.0 on a fedora core 2. I have installed J2EE 1.4 to implement Java Beans classes.

I have tried to run JBoss with jdk 5.0 and jdk 1.4.2 but it wouldn't compile the files. Here is the error I get when I run http://localhost:8080/jmx-console/ in firefox :

type Exception report

message

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

exception

org.apache.jasper.JasperException: Impossible de compiler la classe pour la JSP
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:97)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:346)
org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:414)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:472)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
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:75)

root cause

Unable to find a javac compiler;
com.sun.tools.javac.Main is not on the classpath.
Perhaps JAVA_HOME does not point to the JDK
org.apache.tools.ant.taskdefs.compilers.CompilerAdapterFactory.getCompiler(CompilerAdapterFactory.java:105)
org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:929)
org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:758)
org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:382)

...

Here is the /etc/profile.d/java.sh file I wrote to set the environnement variables for all users :

#export JREHOME="/usr/lib/jre/lib/i386"
#export JAVAWSHOME="/usr/lib/jre/javaws"
#export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$JREHOME:$JAVAWSHOME"
#export PATH="$PATH:/usr/lib/jre/bin"
export JAVA_HOME="/usr/java/jdk1.4.2_06"
export JDK_HOME="usr/java/j2sdk1.4.2_06"
export PATH="$JAVA_HOME/bin:$PATH"
export PATH="/opt/SUNWappserver/bin:$PATH"
export PATH="/opt/SUNWappserver/share/bin:$PATH"
export CLASSPATH="$JAVA_HOME:/opt/SUNWappserver/lib/j2ee.jar"
export CLASSPATH="$CLASSPATH:/usr/java/j2sdk1.4.2_06/lib/tools.jar"
#export CLASSPATH="$CLASSPATH:/usr/java/j2sdk1.4.2_06/lib/rt.jar:./"

Is there something wrong with my configuration file ?

Best regards,

José
Student Paris - France

[frito]

typo??

export JAVA_HOME="/usr/java/jdk1.4.2_06"
export JDK_HOME="usr/java/j2sdk1.4.2_06"

JAVA_HOME must point to a correctly installed JDK!

[stevecoh2]

I am experiencing a similar problem.
OS Win/2K
JBoss Version 3.2.5
JBoss IDE version 1.4.0
Eclipse Version 3.0.1

Two problems:
First, on starting server

17:37:56,454 ERROR [HANamingService] Could not start on port 1100
java.net.BindException: Address already in use: JVM_Bind
at java.net.PlainSocketImpl.socketBind(Native Method)
at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:331)
at java.net.ServerSocket.bind(ServerSocket.java:318)
at java.net.ServerSocket.(ServerSocket.java:185)
at org.jboss.ha.jndi.DetachedHANamingService.startService(DetachedHANamingService.java:223)
...

If I ignore this and try to run my web app, I get on the web page:

Unable to find a javac compiler;
com.sun.tools.javac.Main is not on the classpath.
Perhaps JAVA_HOME does not point to the JDK
org.apache.tools.ant.taskdefs.compilers.CompilerAdapterFactory.getCompiler(CompilerAdapterFactory.java:106)
org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:935)
org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:764)
org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:382)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:472)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
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)

Yet:
U:\>set JAVA_HOME
JAVA_HOME=C:\j2sdk1.4.2_05

U:\>set JDK_HOME
JDK_HOME=C:\j2sdk1.4.2_05

Inside Eclipse, the "Window-Preferences-Java-Installed Runtime JREs"
also points at C:\j2sdk1.4.2_05.

What is this port 1100? Nothing in my jboss-service.xml points there.