Executing java.class files

Question

From julesh1
To whom may help me:
I'm new to java.
I'm currently using jdk1.4.
I can compile File.java just fine.
But when i try to execute File.class i get an error message saying
java.lang.noclassDefFoundError.
This did not happen before.
any help would greatly be appreciated.

Answer 1

when you receive that error it usually indicates that the CLASSPATH does not include the directory where you are saving your .class files. If you are using Windows 2000, you need to:
1. Right click on My Computer
2. Go to properties
3. Click on the Advance tab
4. Click on Environment Variables
5. Edit or create a new variable named ClassPath and type in something similar to this:
.;C:\java;C:\jdk1.3.1;
If you have Windows 95 or 98,
Click on Start, then Run and type in sysedit, then click OK.
Go to the AUTOEXEC.BAT file which usually is the first file to pop up. Type:
SET CLASSPATH=.;C:\jdk1.3.1\classes;c:\java
In the above . is the current directory; c:\jdk1.3.1\classes is a place where you can store your class files; c:\java is a directory I created on my hard drive where I store my class files..
I hope this helps,
Kent