Java refers to a number of computer software proucts and specifications from Sun Microsystems that together provide a system for developing application software and deploying it in a cross-platform environment. Java is used in a wide variety of computing platforms spanning from embedded devices and mobile phones on the low end to enterprise servers and supercomputers on the high end. Java is fairly ubiquitous in mobile phones, Web servers and enterprise applications, and somewhat less common on desktop computers, though users may have come across Java applets when browsing the World Wide Web.