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Movements, leaders, victories and the continuing fight for equality.
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Explore the people, places, events, achievements, struggles and stories that shaped our journey.
Movements, leaders, victories and the continuing fight for equality.
Innovation, patents, science, technology and world-changing contributions.
Pioneers, champions, Negro Leagues, records, activism and excellence.
Meet the people whose lives, choices and achievements shaped the journey.
Black towns, communities, institutions and places where history happened.
Moments that changed communities, movements, institutions and the nation.
Katherine Johnson’s mathematical calculations helped guide some of America’s most important early space missions while she confronted the racial and gender barriers faced by Black women in twentieth-century America.
MORE →Reflects the personal views, recollections, and perspective of the author, Mike Davis.
This is a personal recollection on the Move fire on May 13, 1985
| JavaOS | |
|---|---|
| Developer | Sun Microsystems |
| Written in | Java (primarily) C and C++ (parts of kernel) |
| OS family | Java |
| Working state | Discontinued |
| Source model | Closed source |
| Initial release | May 29, 1996 |
| Latest release | Final / August 23, 1999 |
| Available in | English |
| Supported platforms | ARM, PowerPC, SPARC, IA-32 (x86) |
| Kernel type | Microkernel |
| License | Proprietary |
| Official website | sun.com/javaos at the Wayback Machine (archived 1998-01-22) |
JavaOS is a discontinued[1] operating system based on a Java virtual machine. It was originally developed by Sun Microsystems.[2] Unlike Windows, macOS, Unix, or Unix-like systems which are primarily written in the C or C++ programming languages, JavaOS is primarily written in Java. It is now considered a legacy system.[3]
The Java programming language was introduced by Sun in May 1995. Jim Mitchell and Peter Madany at JavaSoft designed a new operating system, codenamed Kona, written completely in Java. In March 1996, Tom Saulpaugh joined the now seven-person Kona team to design an input/output (I/O) architecture, having come from Apple as Macintosh system software engineer since June 1985 and co-architect of Copland.[4]: XI–XIII
JavaOS was first announced in a Byte article.[5] In 1996, JavaSoft's official product announcement described the compact OS designed to run "in anything from net computers to pagers".[2] In early 1997, JavaSoft transferred JavaOS to SunSoft. In late 1997, Bob Rodriguez led the team to collaborate with IBM who then marketed the platform, accelerated development, and made significant key architectural contributions to the next release of JavaOS, eventually renamed JavaOS for Business.[4]: XI–XIII [6] IBM indicated its focus was more on network computer thin clients, specifically to replace traditional IBM 3270 "green screen" and Unix X terminals, and to implement single application clients.[7]
Chorus, a distributed real-time operating system, was used for its microkernel technology.[4]: XIII This began with Chorus Systèmes SA, a French company, licensing JavaOS from Sun and replacing the earlier JavaOS hardware abstraction layer with the Chorus microkernel,[8] thereby creating the Chorus/Jazz product, which was intended to allow Java applications to run in a distributed, real-time embedded system environment.[9] Then in September 1997, it was announced that Sun Microsystems was acquiring Chorus Systèmes SA.[10]
In 1999, Sun and IBM announced the discontinuation of the JavaOS product.[1] As early as 2003, Sun materials referred to JavaOS as a "legacy technology", recommending migration to Java ME, leaving the choice of specific OS and Java environment to the implementer.[citation needed]
JavaOS is based on a hardware architecture native microkernel, running on platforms including ARM, PowerPC, SPARC, StrongARM, and IA-32 (x86). The Java virtual machine runs on the microkernel. All device drivers are written in Java and executed by the virtual machine. A graphics and windowing system implementing the Abstract Window Toolkit (AWT) application programming interface (API) is also written in Java.[4][page needed]
JavaOS was designed to run on embedded systems and has applications in devices such as set-top boxes, computer networking infrastructure, and automated teller machines (ATMs). It comes with the JavaStation.[citation needed]
JavaSoft granted licenses to more than 25 manufacturers, including Oracle, Acer, Xerox, Toshiba, and Nokia. IBM and Sun announced the cooperation for JavaOS for Business at the end of March 1998.[3]
JavaOS uses a small memory footprint, yet its network-centric design lets it access large-scale services
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Source: Wikipedia. Article content is retrieved live through the MediaWiki API.
JavaOS is a discontinued operating system based on a Java virtual machine. It was originally developed by Sun Microsystems. Unlike Windows, macOS, Unix, or Unix-like systems which are primarily written in the C or C++ programming languages, JavaOS is primarily written in Java. It is now considered a legacy system.
Netscape Navigator 2 is a discontinued proprietary web browser released by Netscape Communications Corporation as its flagship product. Versions were available for Microsoft Windows, Apple Macintosh, Linux, IRIX, HP-UX, AIX, Solaris, SunOS, JavaOS, and FreeBSD. The browser introduced and improved several features and also added proprietary extensions to the HTML standard. Notably, Netscape 2 was the first browser to support JavaScript and animated GIFs, two technologies still predominant on the web today.
ChorusOS is a microkernel real-time operating system designed as a message passing computing model. ChorusOS began as the Chorus distributed real-time operating system research project at the French Institute for Research in Computer Science and Automation (INRIA) in 1979. During the 1980s, Chorus was one of two earliest microkernels (the other being Mach) and was developed commercially by startup company Chorus Systèmes SA. Over time, development effort shifted away from distribution aspects to real-time for embedded systems. In 1997, Sun Microsystems acquired Chorus Systèmes for its microkernel technology, which went toward the new JavaOS. Sun (and henceforth Oracle) no longer supports ChorusOS. The founders of Chorus Systèmes started a new company called Jaluna in August 2002. Jaluna then became VirtualLogix, which was then acquired by Red Bend in September 2010. VirtualLogix designed embedded systems using Linux and ChorusOS (which they named VirtualLogix C5). C5 was described by them as a carrier grade operating system, and was actively maintained by them. The latest source tree of ChorusOS, an evolution of version 5.0, was released as open-source software by Sun and is available at the Sun Download Center. The Jaluna project has completed these sources and published it online. Jaluna-1 is described there as a real-time Portable Operating System Interface (RT-POSIX) layer based on FreeBSD 4.1, and the CDE cross-platform software development environment. ChorusOS is supported by popular Secure Socket Layer and Transport Layer Security (SSL/TLS) libraries such as wolfSSL.
HotJava Views was a productivity software suite developed by Sun Microsystems and implemented in Java. It was released in 1996 and was intended primarily for JavaStation or other JavaOS-based network computers. HotJava Views consisted of four applications: MailView IMAP4 e-mail client CalendarView Group scheduling WebView HotJava web browser NameView Directory services The graphical user interface of HotJava Views was quite novel in that it dispensed with some of the common features of GUIs in order to simplify the interface. Menu bars and overlapping, resizable windows were eliminated, and a simple Selector icon bar was used to switch between applications. Other third-party Java applications could be added to the Selector.
Before the 1921 destruction of Tulsa’s Greenwood District, Black residents had created a remarkable center of business and community life. The district included stores, professional offices, entertainment venues and homes owned by Black citizens. Understanding Greenwood means learning what was built—not only what was burned.
MORE →The Greenwood District.
