Set CLASSPATH does not work, how do I run java.exe?

Question

Hi guys,
I have a problem running the java.exe and I'm using Win XP. Here is my problem:
Under the command prompt, I set the path: path = C:\Program Files\Java 2\j2sdk1.4.2_05\bin
Then I created a folder in E:\Hello. I save my Hello.java in that folder, and I compiled it:
javac Hello.java
Now, there is a Hello.class created in that folder.
Then I try to run it: java Hello
but I got an error: "Exception in thread "main" java.lang.NoClassDefFoundError: Hello"
So, I try to set CLASSPATH, however, the problem remains, no matter how hard I try.
Any ideas?

Answer 1

None of the suggestion worked, I wonder why???
Here is my location for the JDK:
C:\Program Files\Java 2\j2sdk1.4.2_05\bin
Here is my location for my Java project file:
E:\JavaProject\Hello
Here is the file name:
Hello.java
Here is the command prompt:
C:\Documents and Settings\Alex Ngai> e:
E:\> cd JavaProject
E:\JavaProject> cd Hello
E:\JavaProject\Hello> path = C:\Program Files\Java
2\j2sdk1.4.2_05\bin
E:\JavaProject\Hello> javac Hello.java
E:\JavaProject\Hello> java Hello
Exception in thread "main"
java.lang.NoClassDefFoundError: Hello
E:\JavaProject\Hello> java -cp Hello
// Does not work, it lists all of the options for java
E:\JavaProject\Hello> set CLASSPATH =
E:\JavaProject\Hello
CLASSPATH="C:\Program
Files\Java\j2re1.4.2_04\lib\ext\QTJava.zip"
E:\JavaProject\Hello> java Hello
Exception in thread "main"
java.lang.NoClassDefFoundError: Hello
// I have tried a lot more, none of them won't work!!
Now what should I try in the following command prompt?
E:\JavaProject\Hello>Given the above there is only one possible explaination.
You have a file named "Hello.java".
In that file you have a non-public class which is NOT named "Hello". Instead it is named something like "HelloWorld" or even "hello" (case matters.)