- What is HashMap?
- What is HashMap in Java?
- What is HashTable?
- What is HashTable in Java?
- What are the differences between HashMap and HashTable?
- What are the differences between HashMap and HashTable in Java?
HashMap vs HashTable
1. HashMap is non-synchronized. HashTable is synchronized.
2. HashMap is not thread safe. HashTable is thread safe.
3. HashMap allows one null key and any number of null values while HashTable do not allow null keys and null values in HashTable Object.
4. HashMap object values are iterated using iterator. HashTable is only class other than Vector class which uses enumerator to iterate values of HashTable object.
5. The iterator in HashMap is fail-fast iterator while enumerator for HashTable is not.
6. HashMap is much faster and uses less memory than HashTable.
7. HashMap is subclass of AbstractMap class. HashTable is subclass of Dictionary class which is obsolete in 1.7 and not in use anymore.
I am very happy to inform you that I am selected as Member of NetBeans Dream Team. It is an honor to be a member of NetBeans Dream Team and I am thankful of NetBeans Dream Team and NetBeans Team for considering me and my efforts towards Java and NetBeans, feeling honored since there are around only 50 people selected till now from all over the world and I am the 3rd Indian to be a member of NetBeans Dream Team after Mr, Tushar Joshi (Nagpur, India) and Mr. Rajmahendra Hegde (Chennai and Hyderabad, India).
11th Feb. 2015 was a great day for me, we had festival (Birth Anniversary) of Saint Gajanan Maharaj (Shegaon, Maharashtra, India) and same day only I have received mail with subject as Invitation to join NetBeans Dream Team!. This means all my faith in our saint and dreams have come true.
I am feeling more responsible now and I understand my responsibilities and will work as per guidelines of veteran members of NetBeans Dream Team. I am already working with a new JUG near Pune (Maharashtra, India) that is JUG Nashik (Maharashtra, India) and will be there for few days with them from 13th Feb 2015. I will be working with 3 JUGs for now that is JUG Nagpur, JUG Pune and JUG Nashik.
For this, I would love to give credit to my family and specially to my Guide cum Mentor, Mr. Tushar Joshi. They have always encouraged me a lot even when many times I could not give them enough time due to hectic schedule of training session all over India. Also I would love to say thanks to my little son for coming in our life as a good luck charm only few days back. My wife was in also worried whether I will be there or not at the time of labor but never complained and said you just do your job, I will take care of everything.
Conducted Seminar on Java and Android at Besa Polytechnic, Nagpur on 27th Dec. 2014.
Conducted 5 Days Training on Android, HTML5 and WordPress at Tulsiramji Gaikwad Patil College of Engineering & Technology, Nagpur from 22nd Dec. 2014 to 26th Dec. 2014
It was Training cum Internship program for students and there were more than 250 students who attended this program. We have conducted 3 parallel sessions and it was again a good experience with the students of TGPCET, Nagpur.
Conducted a Seminar at Dr. B. V. Hiray M.B.A. and M.C.A. College, Malegaon, Near Nashik (Maharashtra – India) on 18th Dec. 2014.
It is always pleasure to share your experiences with students. After the seminar conducted technical interviews of the M.C.A. students as a part of placement and internship drive by SSIT.
Conducted 3 days Live and Online Android Training at Oracle Mumbai from Oracle Park, Pune dated 15th Dec. 2014 to 17th Dec. 2014. It was a great experience to conduct training for the giant like Oracle. It is always pleasure and fun working with Oracle people. After the completion of the training received great feedback from all the attendees, glad to see that people out there liked training methodology. I always love to share the knowledge and experiences with the people.
Conducted Java Training at CDAC for M.Tech. students at Bhaskaracharya Institute of Space Applications and Geo-Informatics (BISAG), Info City, Gandhinagar, Gujrat under Gujrat Technical University (GTU). Seen a great collaboration between BISAG, CDAC and GTU, never seen such program for students where are students getting chance to work on research projects and all.
During the training covered Java, Java EE, Struts, Hibernate, Spring, EJB, RMI, Networking, etc. all in 5 days daily 8 hours. It helps a lot to cover that much if you use NetBeans for training Java and other Java related technologies like JavaEE, Struts, Hibernate, Spring, HTML5, etc. Students were good.
I feel honored after receiving Diwali Gift and Dinner party from students. I would also like to thanks them for Akshardham visit and really love the fountain and water show at Akshardham. There are only 4 water shows like that all over the world. I really enjoyed a lot guys thanks a lot. And I would like to share the thing that you are doing for physically and mentally challenged people, I have never seen this from students.