Programming Language Pragmatics, Fourth Edition
Programming Language Pragmatics, Fourth Edition
4th Edition
ISBN: 9780124104099
Author: Michael L. Scott
Publisher: Elsevier Science
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Chapter 6.1, Problem 14CYU

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The notation of definite assignment in Java:

  • Every local variable and blank final filed in java must have a definitely assigned value while accessing its value.
  • An accessing to its value consists of the simple name of the variable occurs anywhere in an expression except the left side operand of the simple assignment operator.
  • A java compiler must carry out a specific conservative flow analysis to make sure that, for each access of a local variable or blank final filed, the blank final filed definitely assigned before the access, else it will produce a compile-time error.
  • Likewise, each blank final variable must assigned at most once...

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