Class SyncFactory

concurrent/SynchronizedFactory.java:7–17

import java.util.concurrent.atomic.*;

final class SyncFactory implements HasID {
  private final int id;
  private SyncFactory(SharedArg sa) {
    id = sa.get();
  }
  @Override public int getID() { return id; }
  public static synchronized
  SyncFactory factory(SharedArg sa) {
    return new SyncFactory(sa);
  }
}

public class SynchronizedFactory {
  public static void main(String[] args) {