Cuando quiero entrar a un server con el J3 Me sale "Tiempo de espera agotado"

Good, what happens is that I have a j3, a minecraft client and every time I try to enter a server, I get the Timeout error, and so it stays, it does not allow me to enter any server, I uninstalled it several times , download other javas, restart my pc and even deactivate my antivirus help me please what could I do: ((.