Same value in all objects

[1510982]

I've read somewhere that the variables that are static are have the same value for all objects created from same class. Is that true? How to count people then in the all instances of Class withouth some other class. Is this approach right? I don't know if I'm right, at first I wanted to make a Integer class, but I then found out (thanks to some other collegue at this forum) that the value cannot be incremented... So here it goes

public class Person {
public static int countPersons; //count all persons

public Person() {
incrementPerson();
}

private void incrementPerson() {
if (this.countPersons == 0) {
this.countPersons = 0;
} else {
this.countPersons++;
}
}
}

Thanks in advance.

Rastko

 

[jnicho02]

Yes, the static variable will be a single instance. All of the Person classes will refer to the exact same variable.

Jeremy Nicholson, Director of

http://www.firstlightassociates.co.uk

a UK-based Java and Data Warehousing consultancy