Access the jar in jre in LINUX platform, wait on line

Question

my program need to access some classes in jre,
com.sun.xml.tree.XmlDocument
it locates in /usr/local/java/jdk1.5/jre/lib/rt.jar, I have set it use the export CLASSPATH command, however, it cannot get access to that class, could anybody tell me what is the issue there???
ReplaceText.java:6: Can't find default package `javax.xml.parsers'. Check the CLASSPATH environment variable and the access to the archives
ReplaceText.java:7: Class or interface `com.sun.xml.tree.XmlDocument' not found
in import.
import com.sun.xml.tree.XmlDocument;
^
ReplaceText.java:23: Type `DocumentBuilderFactory' not found in the declaration
of the local variable `factory'.
DocumentBuilderFactory factory =
^
ReplaceText.java:29: Type `DocumentBuilder' not found in the declaration of the
local variable `builder'.
DocumentBuilder builder = factory.newDocumentBuilder();
^
ReplaceText.java:64: Type `TransformerFactory' not found in the declaration of the local variable `transformerFactory'.
TransformerFactory transformerFactory = //new
^
ReplaceText.java:66: Type `Transformer' not found in the declaration of the local variable `serializer'.
Transformer serializer = transformerFactory.newTransformer(); //new
^
6 errors

Answer 1

You are supposed to provide the java source code that lead to this system error, we are not assembler debuggers! but we can find a workaround if you display your code