Welcome to the Java installation guide for OpunPlanner.com

To allow you to view and interact with your design in 3D Opun Planner uses a Java applet. There are lots of applications and websites that won't work unless you have Java installed, and more are created every day. Java is fast, secure, and reliable. From laptops to datacenters, game consoles to scientific supercomputers, cell phones to the Internet, Java is everywhere! Which is why we've decided to use it to power our planner. Also its free to download, which in our eyes is always good. If you would like to know more about Java click here. 

This page is designed to show you step by step how to install Java on your PC or laptop. Click here to go to the Java website. This will open Java.com in a new window so you can refer back to these instructions as you need too.

When you reach the site click on Download now for free. This will automatically check your machine for any Java installations.

If you already have Java installed but are not on the latest version click here.

If no version of Java is detected just follow the step by step instructions below.

Download the latest version

Accept and download

You will then need to run the installation. Depending on the browser that you use you will be prompted to do this in different ways.

Either select your browser Internet Explorer  Google Chrome  Mozilla Firefox  or scroll down to the browser you are using.

ie download

  • For Mozilla Firefox users you will first be prompted to save a file. Click save file, then double click on the 'jpiinstall.exe' that shows in the download manager to run the installation.

Firefox save exe  
Firefox install

Google Chrome



  • A progress bar will appear to show that the installation is downloading. This may be very quick or may take a few minutes depending on the speed of your connection.

Progress bar

  • Once the download is complete you will receive the following message.

Install complete

Before you can run Opun Planner you will need to make one change to the settings of Java. This is a temporary issue that we hope will be resolved in the next Java update .

Follow this link for step by step instructions.