Generate auto increment number by using Java

Question

I am trying to generate unique auto increment id which will started from 0. I found something for doing this using below code:

private static final AtomicInteger count = new AtomicInteger(0);   
uniqueID = count.incrementAndGet();

I can create auto increment ID by manually :

For example :

int i = 0; // Obviously I will declare this variable as global
++i;

In this way I can manage to do this. But I don't want to do this manually. I am finding some java method which will take of all this stuff.

And I found below code :

private static final AtomicInteger count = new AtomicInteger(0);   
uniqueID = count.incrementAndGet();

Now my question is, Is this the right way to generate unique ID? Or, is there any other better solution?

This will be only unique within a single JVM run. Starts from 0 again when you restart your program. Will not be unique across different machines. — Thilo, Jan 29 '16 at 07:18
Related: http://stackoverflow.com/questions/12911163/how-to-generate-incremental-identifier-in-java?rq=1 — , Jan 29 '16 at 07:19
What are the requirements? How is the ID to be used? Will it be shared/persisted? Is it a problem that it's guessable? — Thilo, Jan 29 '16 at 07:19
Without more requirements, it's unclear exactly what you're asking. — Jon Skeet, Jan 29 '16 at 07:24

score 0 · Answer 1 · answered Jan 29 '16 at 07:24

0

If it should be unique only within a single process, then yes you can use an AtomicInteger.

answered Jan 29 '16 at 07:24

Layansan

Would request you to add some more details. – Vinay Prajapati Jan 29 '16 at 07:35

1 Answers1