java - how to get the jar files of a library or framework

I want to download the .jar file of a java framework.
That .jar should of course contain all the .class files that I need for my project.

I tried downloading from here:
https://mvnrepository.com/artifact/org.apache.camel/camel-core/3.18.2
But the .jar file is only 4KB big and contains only meta information, but no java classes.
I found jar files with java classes in them in older versions, but in newer versions they seem to upload only meta information.

So I don't know how to get to the .jar file with all .class files inside.
I don't want to work with maven or gradle for now.
And you can't just download jars with maven or gradle you have to build your entire project with it.

I also searched the github (https://github.com/apache/camel) and source code of the "Apache Camel" project and did not encounter jar files.
Is there any other popular place where open source java frameworks/libraries with jar files can be found?

The apache camel module doesn't contain any code. It just declares a list of dependencies, in the /META-INF/maven/org.apache.camel/camel-core/pom.xml file:

• camel-core-engine
• camel-core-languages
• camel-bean
• camel-browse
• camel-cluster
• camel-controlbus
• camel-dataformat
• camel-dataset
• camel-direct
• camel-directvm
• camel-file
• camel-health
• camel-language
• camel-log
• camel-mock
• camel-ref
• camel-rest
• camel-saga
• camel-scheduler
• camel-seda
• camel-stub
• camel-timer
• camel-validator
• camel-vm
• camel-xpath
• camel-xslt
• camel-xml-jaxb
• camel-xml-jaxp
• slf4j-api

You have to download the jars that you need in this list of dependencies. All jars can be found on https://mvnrepository.com/.

This is why everyone will recommend you to use maven or gradle, as those tools will manage the dependencies for you.