Architecture Neutral & Portable

• neutral byte code format

• network applications so must run on all platforms

  • eg, UNIX, Windows 95, Windows NT, PowerPC Macintosh

• abstract windowing toolkit (awt) supports appropriate behavior on all platforms

• there are no ìimplementationî dependant aspects

• explicitly specifies the size of each primitive data type, as well as, all arithmentic behavior

• Java compiler written in Java

• Java run time system written in ANSI C,

• run time system is POSIX compliant

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