Reinstall Java

These steps should remove all versions of Java to allow you to install the latest version.

Windows

1. Open 'Control panel' and select 'Programs and Features'
2. Uninstall ALL current versions of Java
3. Visit the Java website, press 'Download Java' and follow the prompts to install Java

Mac

1. Make sure you are logged in as the administrator for your MAC
2. Open terminal and input the following commands one at a time:

   rm -fr /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin

   rm -fr /Library/PreferencePanes/JavaControlPanel.prefpane

3. Visit the Java website, press "Download Java" and follow the prompts to install Java

Still stuck?

Check out solutions for performance issues.