How can see the effect of synchronized keyword

Question

hi
I read the follwoing code in some books:
class W{
static private int count=0;
public String name;
int no;
private static synchronized int addW(){    return ++count; }
public W(){ no= addW();  }
}but I think that synchronized keyword in this code doesn't have an effect, i.e., if we remove it, the output would be ok, can anyone able to change this code such that the output becomes different depend on existance of synchronized keyword.
thank you

Answer 1

but I think that synchronized keyword in this code
doesn't have an effect, i.e., if we remove it, the
output would be ok,Well, you're mistaken.
can anyone able to change this
code such that the output becomes different depend on
existance of synchronized keyword.No change is necessary. Synchronization is required to ensure proper behavior for the code presented.