NoClassDefFound in Java / Eclipse: How do I make a clean and easy reference to another project?

I have been searching for this problem all over, and a lot of ppl has the same problem. However, I cannot find any good explaination or how to actually solve this issue.

The problem is that then I add a Project Refernce in my project, it will not give me any compile-time errors. However, when I use the referenced project in my main project, I get the java.lang.NoClassDefFoundError.

To me, this is very very insane. If I add a Project Reference, I expect that project to be available during runtime. It is not, apparently.

I add it by RIGHT-CLICK on the Project --> Properties --> Projects --> and then add my project that is in the workspace.

And no, I dont really want to export my referenced project to a JAR and import that file, since that mean I have to import it every time I change the referenced project.

It should be so easy - like in Visual Studio - to add the project and then be done with it.

What am I missing?


It seems I found the problem.

The "MiscLibrary", the project I am referencing from my MainProject, has another external JAR referenced. If that wasnt also imported in the MainProject, I get those weird errors.

Its very bad that 1) I can compile it without any errors or warning! 2) In runtime, the error messages give no indication what so ever that I am missing a reference to another library. Instead, it says it cannot find MiscLibrary, when in fact the problem is the missing external lib in MiscLibrary...

Need Your Help

InvalidOperationException when calling SaveChanges in .NET Entity framework with Oracle ODP.NET

c# oracle entity-framework

I have a code which deletes some entities from database and then re-insert updated rows. Scheme is following:

About UNIX Resources Network

Original, collect and organize Developers related documents, information and materials, contains jQuery, Html, CSS, MySQL, .NET, ASP.NET, SQL, objective-c, iPhone, Ruby on Rails, C, SQL Server, Ruby, Arrays, Regex, ASP.NET MVC, WPF, XML, Ajax, DataBase, and so on.