java networking - part 1

java networking - part 1 - CNT 4714: Enterprise Computing...

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CNT 4714: Java Networking Part 1 Page 1 Dr. Mark Llewellyn © CNT 4714: Enterprise Computing Spring 2012 Java Networking and the Internet – Part 1 Department of Electrical Engineering and Computer Science Computer Science Division University of Central Florida Instructor : Dr. Mark Llewellyn markl@cs.ucf.edu HEC 236, 407-823-2790 http://www.cs.ucf.edu/courses/cnt4714/spr2012
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CNT 4714: Java Networking Part 1 Page 2 Dr. Mark Llewellyn © Distributed Applications in the Enterprise Distributed applications are one of the latest developments of information technology, which began about 50 years ago, and is still developing at a very fast pace. The first electronic computers available in 1940s and 50s were reserved for special applications. Many had military applications such as the encryption and decoding of messages. The 1960s witnessed the advent of batch processing , in which several users could pass their tasks to the computer operator (the “server”). Once processed, the results were returned to the “client” by the operator. As there was no interactivity at that time, computers were used for primarily numerical applications that required little user input but required a high computational effort.
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CNT 4714: Java Networking Part 1 Page 3 Dr. Mark Llewellyn © Distributed Applications in the Enterprise (cont.) With the advent of mainframes, interactive applications came into play. Several users could finally use one computer simultaneously in time-sharing mode. Tasks were no longer completed in sequence as with batch processing, but rather completed in sections. The next trend, beginning with the introduction of the PC in 1980, was the shift in computing power from the central mainframe to the desktop. Computer performance at levels which were undreamt of previously, was now available to employees directly at their desk. Each user could install their own applications to create an optimally configured work environment. This began the age of the standardized office packages, which enabled office automation to be driven forward considerably.
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Page 4 Dr. Mark Llewellyn © Distributed Applications in the Enterprise (cont.) Since the 1990s, the trend has shifted increasingly from distributed information processing to enterprise computing . Previously autonomously operating workstations were integrated together with central file, database, and application servers, resulting in huge decentralized clusters, which were used to handle tasks of a more complicated nature. The defining sentence which characterized this phase coined by Sun Microsystems reads – “The network is the computer.” What was it that led to this ever increasing greater importance of distributed applications? There are several reasons commonly cited:
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java networking - part 1 - CNT 4714: Enterprise Computing...

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