[Q&A] Error occurred while running

[Uoyzix]

Provide the MATSim version you are using. You can find the version in the pom.xml. E.g. 2025.0.

13.0

Did you build a minimal example to reproduce the issue?

• Yes!

Describe the problem you are facing.

Why do I get so many "package does not exist" errors when I run it?
Package org.apache.logging.log4j does not exist: 4
Package org.apache.logging.log4j does not exist: 5
Package org.matsim.api.core.v01 does not exist: 6
Package org.matsim.api.core.v01 does not exist: 7
Package org.matsim.api.core.v01.network does not exist: 8
Package org.matsim.api.core.v01.population does not exist: 9
Package org.matsim.api.core.v01.population Does not exist: 10 Package org.matsim.apI.core.v01.population does not exist: 11
Package org.matsim.core.config does not exist: 12
Package org.matsim.core.config does not exist: 13
Package org.matsim.core.controler does not exist: 14
Package org.matsim.core.controler does not exist: 15
Package org.matsim.core.controler does not exist: 16
Package org.matsim.core.controler.events does not exist: 17
Package org.matsim.core.controler.listener does not exist: 18
Package org.matsim.core.population.routes does not exist: 19
Package org.matsim.core.router does not exist: 20
Package org.matsim.core.router does not exist: 21
Package org.matsim.core.router does not exist: 22
Package org.matsim.core.scenario does not exist: 23
Package org.matsim.core.utils.timing does not exist: 24
No symbols can be found: 35
No symbols could be found: 61

If possible, provide a link to your minimal example. This might be a GitHub repository.

No response

If you want, provide some background information about you and your project. This might help us understand your issue better.

No response

[mrieser]

MATSim 13.0 is quite old (it's from April 2021), I would strongly suggest to update to a newer version.

Why do I get so many "package does not exist" errors when I run it?

Do you use the matsim-example-project?

Are you familiar with Maven and Java builds of complex projects?

To me it looks as if the matsim-libary was not properly downloaded by Maven, or you try to compile the project with plain java instead of with mvn compile.

Please provide more information on what steps you did, otherwise it's difficult to help you.

https://www.matsim.org/install/ contains information on how to get started with MATSim, please try to follow one of the alternatives (in an IDE, running just the GUI, …) first and see if that works for you.