Solved

how do i access a class in a library jar file?

Posted on 2008-10-25
8
303 Views
Last Modified: 2013-12-14
I have attached a jar file to my new project. The jar file has a bunch of classes in the default package. So, the one i want to instatiate is named AgentImpl.

When i go to create an AgentImpl agent = new AgentImpl(); it does not see the class.

How do i access these classes inside of the jar file.

I can see the jar file under my libraries in netbeans, so i attached it correctly.

thanks
0
Comment
Question by:alexmac05
  • 5
  • 3
8 Comments
 
LVL 59

Accepted Solution

by:
Kevin Cross earned 500 total points
Comment Utility
I believe the problem is the fact that the classes are in the default package.  If the JAR is your own from another project, name the package and see how that works.  If not, I will try to find how as I haven't had to work around this much as usually JAR's have package names for public interface/classes that I have worked with.
0
 

Author Comment

by:alexmac05
Comment Utility
It is my own so I will try to name the package and see if that works. I'll let you know shortly.

Thanks!

alex
0
 

Author Comment

by:alexmac05
Comment Utility
OK.

I have three projects total in netbeans. The first two need to see each other via package and the third needs to interact with a jar file from EDMS_Agent.

1) EDMS_Agent
all classes are now in package agentpackage

2) ElectionLibrary
all classes are now in package electionpackage

How do I import the packages to the different projects?

I did create a jar file of the EDMS_Agent but now that I changed the package of that jar I can not build it because the ElectionLibrary (which needs to see some classes in EDMS_Agent and visa versa) - they can't see each other so I can't build them. So, i need to get those two packages seeing each other so that I can rebuild the jar to attach it to my third project named ManagementStudioApplication.
0
 

Author Comment

by:alexmac05
Comment Utility
How do I access code from project to project in netbeans?

Does a project need a jar file in order to see classes from another project?

If you know the answer then please let me know.

Otherwise, I was able to move the code from ElectionLibrary into EDMS_Agent and then put it all under one project and then create the jar file and then it worked.

THANKS!!!!

alex

0
Threat Intelligence Starter Resources

Integrating threat intelligence can be challenging, and not all companies are ready. These resources can help you build awareness and prepare for defense.

 

Author Closing Comment

by:alexmac05
Comment Utility
Just wondering - in netbeans if I want classes in one project to access classes in another project - does it have to be through a jar file?  I can't access the namespace through importing the package?
0
 
LVL 59

Expert Comment

by:Kevin Cross
Comment Utility
If you right-click on the project and select properties, you can click on Libraries (same place you would add JAR) and click on the Add Project button.  This will let you build your current project with visibility to the classes in the other project(s).

Hope that helps.
0
 
LVL 59

Expert Comment

by:Kevin Cross
Comment Utility
Once the projects are linked in the classpath, you import them like you would normally.

import electionpackage.*;
0
 

Author Comment

by:alexmac05
Comment Utility
yes, thank you
0

Featured Post

How your wiki can always stay up-to-date

Quip doubles as a “living” wiki and a project management tool that evolves with your organization. As you finish projects in Quip, the work remains, easily accessible to all team members, new and old.
- Increase transparency
- Onboard new hires faster
- Access from mobile/offline

Join & Write a Comment

Java had always been an easily readable and understandable language.  Some relatively recent changes in the language seem to be changing this pretty fast, and anyone that had not seen any Java code for the last 5 years will possibly have issues unde…
How to install Selenium IDE and loops for quick automated testing. Get Selenium IDE from http://seleniumhq.org (http://seleniumhq.org) Go to that link and select download selenium in the right hand columnThat will then direct you to their downlo…
Viewers will learn about the different types of variables in Java and how to declare them. Decide the type of variable desired: Put the keyword corresponding to the type of variable in front of the variable name: Use the equal sign to assign a v…
This tutorial will introduce the viewer to VisualVM for the Java platform application. This video explains an example program and covers the Overview, Monitor, and Heap Dump tabs.

763 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

9 Experts available now in Live!

Get 1:1 Help Now