I'm trying to import a jar that I created to my project in Eclipse. When trying any calls from the so-called jar, I get the following exception:
Exception in thread "main" java.lang.NoClassDefFoundError
Caused by: java.lang.ClassNotFoundException
I believe this is caused due to the class being present on compile, but not being executed in runtime.
The problem is: When I run the jar on its own (without being imported), it works as intended, with all the functionalities. But I now need it to function as being part of a bigger jar, without changing the runtime classpath (didn't do that to the original project).
How can that be achieved?
@Edit
The class not being found or def not being found is ByteList, from the FastUtil library. Exception in thread "main" java.lang.NoClassDefFoundError: it/unimi/dsi/fastutil/bytes/ByteList
It's imported TO another Jar, let's call it MyJar.jar; MyJar.jar functions perfectly as a standalone jar, as the intention for it is to be a library, and it functions by itself.
The situation is: When I import MyJar.jar to another project, it won't work anymore, I can't use it's methods and classes inside the new project.
MyJar.jar can be run from the command prompt, with java -jar MyJar.jar, and it will print it's test-page to show that it's working.
The new project compiles, but when it's ran, I get the class not found exceptions regarding MyJar project.
You can use Maven Assembly Plugin to add all classes from related JARs, otherwise you cannot load classes without adding them to classpath.
If you don't want to use Maven then add all needed classes manually to your JAR.