Scope and lifetime are distinct yet related issues in programming languages. Lan

Question

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 ClassInMethod
{
public static void main(String[] args)
{
int local;

class Inner
{
public void method()
{
local = 1;
}
}
}
}
Why does this code fail to compile? Explain the reason behind this failure in terms of scope and lifetime.


PLEASE EXPLAIN INDEPTHLY, thank you :)

Explanation / Answer

To access the variable "int local" within inner class you have to declare it as "final". like final int local ;

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