Constructor Calling

[abdulwajed khan]

Hi Every one
I saw this phenomenon as i was explaining some java code about multithreading to my friend today.
If i write a class A and class B with default access specifiers, I can call the construtor of one of the class in the other by writing "new" before it. Here is what I did to check it out.
class A
{
A()
{
system.out.println("Inside class A");
}
dummy()
{
system.out.print("dum dum");
}
}
class B
{
new A(); //calling the constructor!!!
}

So that is the code and i would be very greatfull if i can get and explanation about it from someone.
Regards
AbdulWajed

[Ajith Kallambella]

Since this question has nothing to do with Performance, I am going to move this discussion to Java( intermediate ) forum.

------------------
Ajith Kallambella M.
Sun Certified Programmer for the Java2 Platform.

[Manfred Leonhardt]

Hi,
Your code as you have written it will not even compile. Therefore an explanation of how it will run will be very short.
You can only place member variable definitions, methods, static blocks, or other class definitions inside any class! What you have placed there: new A() doesn't fit any of the correct Java items that can be placed there.
If you want to you can say: A a = new A();
Of course, in that case we have Java 101: basically the has-a relationship.
Puzzled by question,
Manfred.

[Bob Moranski]

You can have
class B extends A{
B(){};
}
It will call the no args constructor in A.