Install Java plugin in mozila firefox
- Go to the download page at java.com.
- Click the Free Java Download button.
- Click the Agree and Start Free Download button to download the Java installer to your computer.
- After the download is complete, close Firefox.
- Open the file you downloaded to start the Java installation.
For more information visit: https://support.mozilla.org/en-US/kb/use-java-plugin-to-view-interactive-content