Basic HTML version of Foils prepared 20 Sept 97

Foil 29 Java Features -- It's Architecture-Neutral

From Java Tutorial - Summer 1997 Part 1:Introduction to Java Language CEWES Tutorial, Classes SU/Jackson State -- July 22-25 and Fall 97. by Nancy J. McCracken,Geoffrey C. Fox


1 C/C++ programming in a heterogeneous network environment requires use and compatibility across several vendor platforms and the corresponding compilers. This problem is solved in Java by designing platform-independent binary representation called Java bytecode (or opcode).
2 Java compiler (written in Java and platform-independent) reads Java source and generates Java bytecode. These bytecodes are shipped to client machines upon browser requests.
3 Each client machine must run Java interpreter which performs runtime execution of Java bytecodes. Java interpreter is written in POSIX compliant ANSI C and needs to be ported to and conventionally compiled (once) on each individual platform.
4 Once the interpreter is ported, application developers don't need to worry at all about platform specificity and differences between native compilers.

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© on Sun Oct 12 1997