Scope and lifetime are distinct yet related issues inprogramming languages. Lang
ID: 3619379 • Letter: S
Question
Scope and lifetime are distinct yet related issues inprogramming languages. Languages can sometimes make designdecisions that cause a conflict between the scope and the lifetimeof variables. Java's decision to allow classes to be defined insidea method illustrates this conflict. Consider the followingexample:
Why does this code fail to compile? Explain the reason behindthis failure in terms of scope and lifetime.
In light of this example, was allowing classes to be definedinside methods a good idea? What was the rationale for this designdecision?
Explanation / Answer
Lifetime is the time a variable exists.