Generating a globally unique identifier in Java

Question

Summary: I\'m developing a persistent Java web application, and I need to make sure that all resources I persist have globally unique identifiers to prevent

Answer 1

public class UniqueID {
    private static long startTime = System.currentTimeMillis();
    private static long id;

    public static synchronized String getUniqueID() {
        return "id." + startTime + "." + id++;
    }
}