[java programming] Re: Classpath problem (lab 1003)

Sun, 01 Mar 2009 20:21:35 -0800 

Hello Anton!
Please follow the below steps and test your java program:
1. Open notepad and write the below two lines (Assuming you have JDK at 
c:\JDK1.6):
set CLASSPATH = .;c:\JDK1.6\lib\tools.jar;c:\JDK1.6\lib\dt.jar;%CLASSPATH%
set PATH= c:\JDK1.6\bin;%PATH%
2. Save the file as "MyJavaEnv.bat" inside a directory c:\MyJava
3. Write a new java program ex. SayHello.java and save it inside c:\MyJava
4. Go to c:\MyJava and run the below steps:
    a. MyJavaEnv.bat
    b. javac SayHello.java
    c. java SayHello

Regards,
Sai.
--------------------------------------------------
From: "Anton Shaykin" <[email protected]>
Sent: Monday, March 02, 2009 1:02 AM
To: "Free Java Programming Online Training Course By Sang Shin" 
<[email protected]>
Subject: [java programming] Re: Classpath problem (lab 1003)

>
> Thank you, that's actually what I did after nothing helped. So is
> there no way to set classpath using only command line? As I see it
> sets classpath only for one session, but it doesn't work even this
> way. I mean when I type "set classpath = C:\Java Programs\Classes" it
> seems to work, and then I type "set classpath" and it displays
> "classpath = C:\Java Programs\Classes", and everything looks just
> fine, but when I try "java Hello" it doesn't work! I know that it
> works perfectly the way you described, but again, the question is "How
> can I do the same using command line".
> Thank you.
>
> On Mar 1, 10:00 pm, Samuel Abiodun <[email protected]> wrote:
>> 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
-~----------~----~----~----~------~----~------~--~---

Reply via email to