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Elementary,Middle School,High School,College,University,PHD
| Teaching Since: | May 2017 |
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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
Scope and lifetime are distinct yet related issues in programming languages. Languages can sometimes make design decisions that cause a conflict between the scope and the lifetime of variables. Java's decision to allow classes to be defined inside a method illustrates this conflict. Consider the following example:class AnonymousInnerClassInMethod { public static void main(String[] args) { int local = 1; Comparable compare = new Comparable () { public int compareTo(Object value) { return (Integer)value - local; } }; System.out.println(compare.compareTo(5)); } }
Why does this code fail to compile? What could it be modified so it would compile? Explain the reason behind this failure in terms of scope and lifetime.
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