Cameron-C-Chapman

# check what ports are in use
sudo netstat -ntlp | grep LISTEN

# find the process id of a program
ps aux | grep -i “name of your desired program”
# and kill it
sudo kill -9 process_id

Cameron-C-Chapman

# Installing Oracle (Sun) JDK on Ubuntu

# Before you install it, remove OpenJDK, if you have it installed:
sudo apt-get purge openjdk*

# To install Java 8/7/6, do this:

# Add the PPA:
sudo apt-get install software-properties-common
sudo add-apt-repository ppa:webupd8team/java