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q on inner classes

 
Ranch Hand
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class A {
private static int counter;
public static int getCounter(){return counter++;}
private static int innerCounter;
public static int getInnerCounter(){return innerCounter++;}
private String name;
A() {name = "A" + getCounter();}
class B {
private String name;
B() {
name = "B" + getInnerCounter();
System.out.print(A.this.name + name); // 1
}}
static void m1() {new A().new B();} // 2
static void m2() {this.new B();} // 3
static void m3() {new B();} // 4
public static void main(String[] args) {
m1(); m2(); m3();
}}

What are the results of attempting to compile and run the program?
a. Prints: A0B0A1B1A1B2
b. Prints: A0B0A1B1A2B2
c. Prints: A1B0A0B1A0B2
d. Compile-time error at line 1
e. Compile-time error at line 2
f. Compile-time error at line 3
g. Compile-time error at line 4

answer:: a

i have a query why does 3 compile wat is 'this' in 3 since method is static
 
Greenhorn
Posts: 11
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Steven,

Are you sure the given code snippet is compiling?
It must throw a compile-time error at line 3 and 4.

Check your answer again.

Thanks,
Praveen
 
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Originally posted by PraveenPonna:
...It must throw a compile-time error at line 3 and 4...


Agreed.
 
steven gerrard
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hmm thanks a lot i didnt compile it earlier
its not compiling
clears my doubt
i guess ans given in mock(http://www.danchisholm.net) is not correct
 
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Hi Folks,
I cant understand the //1 line. Wat Doet "A.this.name" means? A is the class name and generally we cal only static variables using Class names. I have never encountered a syntax like this. Can anyone Explain?
Thanks
 
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