The topic of Java being used in a web browser vs. Examples of these applications are below in the 'Do you need Java' section. Offline, Java is used by applications installed in your operating system. All the security issues regarding Java involve applets. The online use involves Java programs, typically referred to as 'applets', embedded in a web page. Java is used both online and offline in Windows, OS X and Linux. Java is very much involved in Android, but not in a way that is visible to end users. Java is supported on Windows, OS X and Linux. Like this site, it is not commercial in any way there are no ads, no tracking, no affiliate links. To illustrate this, the main page of this site, the one with the online Java Tester, was viewed over 20 million times, since July 2008.
In its day, the site was useful to many people and for that I'm glad. It has been around so long, that I lost track of when it first went live. For now, the site will remain available just for the sake of digital archaeologists. Simply put, it is not needed any more as very few people use Java applets in a web browser. September 2018: The time has come to retire this website.