Basic HTML version of Foils prepared 9 Sept 1997

Foil 48 Java Language -- Handling Runtime Errors Using Exceptions

From Java to be used in (Scientific) Computing Part II: Java Language and Object-Oriented Concepts Basic Simulation Track for Computational Science CPS615 -- Fall Semester 97. by Nancy J. McCracken,Geoffrey C. Fox


1 The language itself supports concept of an exception
2 Java supports a hierarchical model of exceptions which allow and indeed require user to supply suitable handlers for any exception that can occur in a Java program
3 Note exceptions that can occur in a method must either be caught (i.e. handled inside method) or thrown (i.e. returned to callee)
4 Thrown exceptions are like returned arguments and are for instance part of interface to a method
5 Exceptions are all (at some level in hierarchy) subclasses of Throwable class

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