Doubt in Method Local inner classes

[Loganathan Karunakaran]

Please consider the below two classes:

I)

class MyOuter2 {
private String x = "Outer2";
void doStuff() {
String z = "local variable";
class MyInner {
public void seeOuter() {
System.out.println("Outer x is " + x);
System.out.println("Local variable z is " + z); // Won't Compile!
} // close inner class method
} // close inner class definition
} // close outer class method doStuff()
}

Output: Compilation fails

MyOuter2.java:8: local variable z is accessed from within inner class;
needs to be declared final
System.out.println("Local variable z is " + z);

II)

class MyOuter2 {
private String x = "Outer2";
void doStuff() {
final String z = "local variable";
class MyInner {
public void seeOuter() {
System.out.println("Outer x is " + x);
System.out.println("Local variable z is " + z); // Won't Compile!
} // close inner class method
} // close inner class definition
} // close outer class method doStuff()
}

Output: Compiles fine

The only change in the second class is the variable 'z' is marked 'final'
In Kathy Sierra book, it is mentioned that the inner class object cannot use the local variables
of the method the inner class is in.

Even though we make it final, still its a local variable. Please help me to understand how it working when we make it final.

[Seetharaman Venkatasamy]

https://coderanch.com/t/524522/java-programmer-SCJP/certification/Special-treatment-final-vaiables-method

[Loganathan Karunakaran]

Thank you Seetharaman

That was very fast repsonse.

[Seetharaman Venkatasamy]

Loganathan Karunakaran wrote:Thank you Seetharaman

You are welcome