reference

[arivu mathi]

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
}}
public static void main(String[] args) {
new A().new B(); // 2
A a1 = new A();
a1.new B(); // 3
a1.new B(); // 4
}}


can anyone explain the output plz???

[Shaan Shar]

(Edited no need to quote post just above)

What sort of confusion do you have??
[ July 19, 2006: Message edited by: Barry Gaunt ]

[Shaan Shar]

System.out.print(A.this.name + name); // 1
}}
public static void main(String[] args) {
new A().new B(); // 2
A a1 = new A();
a1.new B(); // 3
a1.new B(); // 4

Explanation for Line 1 & 2 #
"A.this.name" will refer to name variable of A class (Outer Class) and "name" is referring to inner class's variable.
that's why the output is "A0B0" In both classes now counter is reached to 1.

Explanation for Line 3 #

Now this line

Sample a1 = new Sample();
a1.new B(); // 3

Now this will print "A1B1" both counter increased to 2.

Explanation for Line 4 #

Now this time we are not creating any new object of outer class. so "Sample.this.name" will be ramain same as for line 3 # but still we are creating a new Object of Inner Class. that's why this time inner class counter will be increased after giving the output:

"A1B2"



This is the whole explanation of the code..

If still any concern then revrert back..with specific query.