Install JDK7/JDK8 and WebStorm on Ubuntu

First get Oracle Java installed.  Do the following (copied shamelessly from here) at a terminal:

sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java7-installer
或sudo apt-get install oracle-java8-installer

Then make sure that the install was successful by running:

java -version

Download WebStorm or PHPStorm for Ubuntu.  Move the tar file from your Downloads folder to where you want it installed.

Extract the files and from the extracted directory run

./bin/webstorm.sh

To create a launcher (lifted without remorse from here):

Install gnome-panel with apt-get or Ubuntu software center.

At a terminal:

gnome-desktop-item-edit ~/Desktop/ --create-new

After that enter:

Name: PhpStorm

Description: PhpStorm Launcher

Command: Exec=/usr/local/PhpStorm-xxx.yyy/bin/phpstorm.sh

where xxx.yyy is the PhpStorm version number