wget https://download.jetbrains.com/python/pycharm-community-2017.3.3.tar.gz
tar -xzf pycharm-community-2017.3.3.tar.gz
mv pycharm-community-2017.3.3 pycharm
rm pycharm-community-2017.3.3.tar.gz
cd pycharm/bin
./pycharm.sh

$ java -version
java version "1.8.0_65"
Java(TM) SE Runtime Environment (build 1.8.0_65-b17)
Java HotSpot(TM) Client VM (build 25.65-b01, mixed mode)

sudo apt-get update
sudo apt-get upgrade

sudo apt-get purge oracle*
sudo apt-get update
sudo apt-get upgrade
sudo apt-get remove oracle*
reboot

java -version