Help!!! - HOW & WHERE do I add someone's package into your JDK library 2

[qb828]

Hi!

I forgot how to add someone else's packages into your JDK library.

Can you help me?
How and where?

Do I want the binary or source?

Do I just run "jar xvf sample.jar(.zip)?

Thanks


QB

 

[sedj]

If you add the jar files (un-jarred) into %JAVA_HOME%\jre\lib\ext then they will be picked up automatically. Or alternatively put the jar file anywhere, and reference it by name in your CLASSPATH environment variable.

 

[qb828]

Thank you for your helpful post.


QB

 

[qb828]

Hi sedj!

i put my jar files at jre\lib\ext and run the code.
but it didn't find the package.

so i set the classpath to jre\lib\ext and it ran fine.

But it didn't find the other standard packages.
I can't even run Hello.java.

it says noclassDefFound error.

i have two paths set as

path c:\jsdk\bin;
classpath c:\jsdk\jre\lib\ext;

what are the difference of those two?

DO i need both ?

can you explain to me or guide me to some site where i can read about it?

THANKS

QB

 

[ganeshmb]

gb828,
Place the new jar under some other folder and set your class path to point to the jar(not the directory). For example, you can put the sample.jar under c:\temp and set your classpath as,
CLASSPATH=c:\temp\sample.jar

Ganesh
If you find my post really helpful, please record it by clicking the purple star below.

 

[qb828]

Thanks Ganesh!



Another question.
Ok now I set my classpath as c:\jsdk\jre\lib\ext;

and i compile my file like this
javac -classpath c:\jsdk\jre\lib\ext Mytest.java

why do I need to specify the path again above when I set the classpath already?

when I compile without the path it won't do it.
javac -classpath Mytest.java

I don't get this.

THANKS MILLIONS
QB



QB