it won't let me join a server

Put the summary of the bug you're having here

*What I expected to happen was. i would join the server
Describe what you thought should happen here i would join the server

What actually happened was...: it keeps saying java.net.connectexception: connection refused
Describe what happened here

Steps to Reproduce:
1. you go on to multiplayer
2. ... and click on a server
3. ... then press join and it happens