Re: static field initialised twice

From:

Robert Klemme <bob.news@gmx.net>

Newsgroups:

comp.lang.java.programmer

Date:

Thu, 27 Apr 2006 15:52:19 +0200

Message-ID:

<4bc0kjF10eo04U1@individual.net>

Omega wrote:

Mark Thomas wrote:

Omega wrote:

How are you getting your wrong impressions of the values? - you don't
show any output, or say how (you think) you know what's going on.

Mark

I know whats going on like this:
class A {

    private int id;
    private static long sequence = 1;

    public A(){
        id = sequence;
        sequence++;
        System.out.println("id = "+id+" seq = "+sequence);
    }
}

I cant post whole code here, because it's rather huge, there's whole gui,
plus I write this programm for a company and can't give it to everybody.
I can tell what's going on.

I have a program, in the begining there's one object of class B (the one
that holds list of A). When I create objects of class A, they all have
good id's that is: 1,2,3.... Then I can create second object of class B.
And then sequence is changed to 0. When I create objects A they have ids
0,1,2,... There are no threads in the programm, nothing unusual is going
on.

You said UI - then you usually got at least two threads. Why don't you
just synchronize access to sequence and see what happens?

Btw, your sequence generator generates longs but your id is just int.
That's most likely a problem in itself.

Cheers

robert

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