How to generate a new guid or UUID in Java

                
                    //import required
                    import java.util.UUID;

                    ...

                    //generate a new guid with value
                    UUID uuid = UUID.randomUUID();

                    ...

                    //get the guid value as string
                    String randomUUIDString = uuid.toString();

                    .....

                    //if you need an empty UUID (all zeros)
                    java.util.UUID uuidEmpty = new UUID( 0L , 0L );