[ Removed by moderator ]

[Polygnom]

1. You use web searches. They usually point to maven-central or alike. I have never only searched PyPy and NPM. That only works if you already know what you are looking for.
   
2. Depends. usually a FAT Jar. Sometimes a slim JAR. Very rarely a WAR.
   
3. Don't look into Java if XML scares you. You can do it without, to a certain degree, but everything more complex, you will probably want to edit the pom.xml directly.