Re: Java problem

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>On Sat, 2007-12-29 at 16:40 -0800, Knute Johnson wrote:
>> >On Sat, 2007-12-29 at 15:04 -0800, Knute Johnson wrote:
>> >> >> Actually, Sun's Java is very easy to install and configure on both 32 
>> >> >> and 64 bit.  The only real problem is the lack of a 64bit browser 
>> >> >> plugin and as far as I can tell nspluginwrapper doesn't work with the 
>> >> >> 32bit version.
>> >> >> 
>> >> >> I did a short page on how to set up Sun's Java on F8;
>> >> >> 
>> >> >> http://www.knutejohnson.com/sun-java-on-F8.html
>> >> >----
>> >> >I agree with the following notations...
>> >> >
>> >> >you should probably install the compat-libstdc++-33 PRIOR to installing
>> >> >the Sun JRE/JDK shouldn't you? If you do a 'yum localinstall
>> >> >jre/jdk-VERSION' it will automatically install requisite packages such
>> >> >as the compaat-libstdc++-33
>> >> 
>> >> I works if you do it after, I never tried before.
>> >> 
>> >> >Your notations don't provide methodologies for setting
>> >> >JAVA_HOME/JRE_HOME/CLASSPATH environment variables which are necessary
>> >> >for virtually everything other than the java web browser plugin. This of
>> >> >course was the crux of the OP - java's bin isn't installed in a users
>> >> >$PATH.
>> >> 
>> >> If you use the JPackage none of that is required.  In fact setting 
>> >> the CLASSPATH is almost never required in any installation.
>> >----
>> >docbook-XSL for xalan/xerces/fop etc. Otherwise, you have to locate them
>> >with each call.
>> >
>> >Probably others too...
>> 
>> Sorry, I have no idea what that means.
>----
>that means that executing a java command such as this...
>
>java org.apache.xalan.xslt.Process \
>  -out some_output_file.html \
>  -in some_input_file.xml \
>  -xsl /var/www/html/docbook/docbook.xsl \
>  -param use.extentions 1
>
>or this...
>
>java \
>  -Djavax.xml.parsers.DocumentBuilderFactory=\
>     org.apache.xerces.jaxp.DocumentBuilderFactoryImpl \
>  -Djavax.xml.parsers.SAXParserFactory=\
>     org.apache.xerces.jaxp.SAXParserFactoryImpl \
>  com.icl.saxon.StyleSheet \
>  -o myfile.html \
>  some_input_file.xml \
>  /var/www/html/docbook/docbook.xsl \
>  use.extensions=1
>
>only works if the full path to xalan.jar/xerces.jar/saxon.jar are
>located in $CLASSPATH environmental variable, otherwise, you have to
>spell it out longhand with path within your usage command each time you
>invoke it. It is Java's equivalent to the shell $PATH variable.
>
>As you start to amass jar files, it can be really useful to manage them
>with a CLASSPATH declaration. I'm presuming that is what most
>applications such as a Tomcat or Alfreso are going to do (I gather they
>build it on the fly based upon jar files in particular directories).

Could be and in the case you cite using the enviroment variable makes 
a lot of sense.  Users that are not that experienced seem to have 
more trouble with the environment variable than without it.  It is 
one of the tricky parts of Java.

-- 
Knute Johnson
Molon Labe...


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