It appears your set CLASSPATH is good for the session you ran your "java Hello" program. The following steps will set your path permanently and you'll be able to run java program from any directory of your Windows machine.
1. Start --> Control Panel --> System --> Advanced tab 2. Click Environment Variables 3. Select CLASSPATH and click Edit 4. In Edit System Variable Dialog box, Enter .; (dot semicolon) as the first entry in Variable Value. 5. Add complete path to jdk e.g. "C:\Program Files\JavaStuff\jdk1.6\bin" 6. Click Ok and exit 7. Launch a new command prompt 8. Test by typing "echo "CLASSPATH" you should see.; and path to your jdk 9. Running your program from any directory should be fine. Samuel Abiodun ________________________________ From: Alfred H. <[email protected]> To: Free Java Programming Online Training Course By Sang Shin <[email protected]> Sent: Sunday, March 1, 2009 12:35:22 PM Subject: [java programming] Re: Classpath problem (lab 1003) On Mar 1, 6:48 pm, [email protected] wrote: > On Mar 1, 6:52 pm, Anton Shaykin <[email protected]> wrote:> Please > take a look at this picture: > > [url=http://www.freeimagehosting.net/][img]http://www.freeimagehosting.net/uploads/e152ac2528.jpg[/img][/url] > > I tried everything, but it doesn't work. And I believe I shouldn't be > > currently in "C:\Java Programs\Classes" directory to run the class, > > because if so, why setting CLASSPATH variable at all? I believe the > > only value of doing so is a possibility to run your programs, no > > matter what directory you're currently in. Am I wrong? > > I believe so too. My Hello runs fine in another directory. Perhaps you > could specify the classpath explicitly like this: > C:\Java Programs\Sources>java -cp ..\classes Hello > > > Another issue is that I don't see CLASSPATH in the list of > > enviromental variables, is it OK (see picture attached)? > > [url=http://www.freeimagehosting.net/][img]http://www.freeimagehosting.net/uploads/49d954a64e.jpg[/img][/url] > > Thanks for any help! > > > On Mar 1, 6:10 am, [email protected] wrote: > > > > I believe it has not been compiled. > > > > On Mar 1, 5:11 am, Anton Shaykin <[email protected]> wrote:> After > > > successfully setting up classpath using > > > > set CLASSPATH = C:\Java Programs\Classes > > > > and putting .class file into that directory I still get an exception > > > > java.lang.NoClassDefFoundError > > > > What could be the possible solution? > > > > Even after typing "set CLASSPATH" I see exactly this directory > > > > displayed. And I'm positive there's a Hello.class file in it. But > > > > You can confirm it is there at cmd by: > > > C:\Java Programs\Classes>dir > > > > > every time I type "java Hello" I get the same error. > > > > Any help? > > I think you have to specify the class you have to run. Assume u have 2 directories in your classpath and both have same file to run but with a bit different implementation. JVM has to know which file to run. --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/javaprogrammingwithpassion?hl=en -~----------~----~----~----~------~----~------~--~---
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