Java by API/java.util.concurrent.atomic/AtomicLong

AtomicLong: getAndIncrement()

   <source lang="java">

import java.util.concurrent.atomic.AtomicLong; public class Main {

 public static void main(String[] argv) {
   AtomicLong nextId = new AtomicLong();
   System.out.println(nextId.getAndIncrement());
 }

}

 </source>