ClassPath errors

Hello I am a student learning java and I am Having problems with CLASSPATH,even my teacher can't figure it out so maybe someone here can. I am using sun java version 1.5.0_11 with netbeans 5.5 on Windows XP the class path is set tp .;C:\Program Files\jre1.5.0_11\lib\ext\QTJava.zip the first two programs we have built run fine in netbeans but when i attemp to run in cmd I get exception in thread "main" NoClassDefFoundError . When I send the Java and Class to my teacher the run fine in his cmd we have been trying to solve this for two weeks. I would appreciate any input that might solve this problem. (Path is set .;C:\Program Files\Java\jdk1.5.0_11\bin)
My computer is laptop.
Thanks in advance

Simple. Do not set the classpath variable. Use the -cp switch while running if needed, e.g. (pointing to the current directory)
java -cp . MyClassor in case you're creating a runnable jar, add the Class-Path entry in your manifest file
Class-Path: lib1.jar folder/lib2.jar#

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Hi All,
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And your server has this FileObject class on its classpath, does it?

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C:.; C:\Dev\JavaServer\bin;
C:\Dev\JavaLive\io\MySQL\mysql-connector-java-3.1.12-bin.jar;
C:\Dev\JavaLive\io\Excel\poi-2.5.1-final-20040804.jar;
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import java.io.*;
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import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
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The following errors result at compile:
C:\Dev\JavaLive\exceltest.java:2: package org.apache.poi.hssf.usermodel does not exist
import org.apache.poi.hssf.usermodel.HSSFCell;
                                     ^
C:\Dev\JavaLive\exceltest.java:3: package org.apache.poi.hssf.usermodel does not exist
import org.apache.poi.hssf.usermodel.HSSFRow;
                                     ^
C:\Dev\JavaLive\exceltest.java:4: package org.apache.poi.hssf.usermodel does not exist
import org.apache.poi.hssf.usermodel.HSSFSheet;
                                     ^
C:\Dev\JavaLive\exceltest.java:5: package org.apache.poi.hssf.usermodel does not exist
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
                                     ^
C:\Dev\JavaLive\exceltest.java:17: cannot resolve symbol
symbol : class HSSFWorkbook
location: class exceltest
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C:\Dev\JavaLive\exceltest.java:17: cannot resolve symbol
symbol : class HSSFWorkbook
location: class exceltest
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                                      ^
6 errors
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Thanks
David
Message was edited by:
davidrhowells

Well, it works ok for me. The only thing I can think of is that you haven't re-sourced your classpath? Did you run(start) whatever you're compiling from before or after you set the classpath? Try opening a command prompt and cd to your source file.
Type
echo %classpath%to make sure the classpath is set correctly and then type
javac exceltest.javaThat should work if the classpath is correct...

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