I have written a lot about Java Design Patterns and I got a lot of requests to create an eBook for them. Well, I spent some time in last few weeks and created the PDF eBook for Java Design Patterns.
I was thinking to complete the eBook in 100 pages, but it went to 132 pages.
Just to give you an idea, below images show the table of contents from the eBook. This eBook is intended to explain the Java Design Pattern with the programmer’s approach, so you will see a lot of programs and less of theoretical content in it.
How to Get it?
You just need to subscribe to our newsletter to download the eBook, it’s absolutely free and you will get a download link in Welcome email. the day after you subscribed.
You can easily subscribe through the subscription form on home page, or from our Facebook Page.
I am preparing some other eBooks too, so stay tuned and be subscribed. 🙂
Quoc says
June 15, 2018 at 8:45 amHi Pankaj,
Please send me the link of your design pattern book link.
Thanks
hassan says
March 14, 2018 at 7:50 amThanks Pankaj
kevin says
February 26, 2018 at 11:49 pmPlease send me the ebook
Kamil says
December 26, 2017 at 12:22 pmHi.
I think there is a problem with adapter patterns type. Class adapters use multiple inheritances object adapter relies on object aggregations says GoF. But in your pdf, you show us object adapter codes as the class adapter. Can you check that part, please?
Thank you.
DPac says
January 22, 2017 at 8:58 pmThere is an issue with the Using Reflection to destroy Singleton Pattern example, or maybe I do not understand it, this call:
Constructor[] constructors = EagerInitializedSingleton.class.getDeclaredConstructors();
Does not return anything because all our singleton have private constructors. so the next for loop seems meaningless. I am not sure how this is destroying the singleton pattern? Can you please explain.
hari says
November 4, 2016 at 3:36 amI have subscribed and got a link to download but that link is not working.
Pankaj says
November 5, 2016 at 12:06 ami just tried myself and it’s working. Please check again.
Pratik Mohadarkar says
October 5, 2016 at 7:57 amThank you, Pankaj.
shivaraju says
September 28, 2016 at 10:24 pmHi,
can I write singleton Design Pattern in this way to avoid double checking problem.
public class ThreadSafeSingleton {
private static ThreadSafeSingleton instance;
private int count = 0;
private ThreadSafeSingleton(){}
public static ThreadSafeSingleton getInstanceUsingDoubleLocking(){
if(instance == null){
synchronized (ThreadSafeSingleton.class) {
count++;
if(count<=1){
instance = new ThreadSafeSingleton();
}
}
}
return instance;
}
}
Ken says
July 31, 2016 at 10:43 pmAll well and great BUT……….
As a past IT Manager who wants to develop some projects, I would like some suggestions on the best approach and toolset.
Project Nbr / Description
1 / Android based POS system – tablet based
2/ WWW based “applet” that would work within a 3rd parties website.
3/ Android and “iPhone” app
MANSI TYAGI says
June 30, 2016 at 1:43 amHello pankaj
The link you have send on my email i.d is not working..when i am trying to download java book through that link.. error is shown which is site can’t be reached..may you help me out from dis problem
thank you in advance
chandrajeet says
March 19, 2016 at 8:43 pmI come from different programming language background, looking to gain proficiency in Java by reading upto some relevant details
Rajeev Kumar says
December 15, 2015 at 9:58 ameven with double checked locking you can have more than one instances, but it has been fixed Java 5 onward by declaring instance as volatile.
Viraj says
April 6, 2018 at 12:26 amBingo!
Luca says
August 21, 2015 at 7:12 amThank you, good book. I think I have found a small error: page 10, double checked locking requires that instance is declared volatile to work correctly.
Evgeniy says
August 20, 2015 at 12:46 pmI need book on russian language please!!!
aditi goyal says
August 13, 2015 at 10:02 amHello Pankaj, Pdf is really very good. Infact i wasted my time on videos. Have u any tutorials or videos regarding full fledge small app using Juit,web services ,maven , any frmaework..something like that?? Please if you have any code please share..
Thanks and regards
Aditi Goyal
Divya says
August 10, 2015 at 2:31 amI subscribed and received mail, but the link says webpage not available,.
Shakila says
July 14, 2015 at 9:30 pmHi Pankaj,
I have subscribed to the link however I did not recieve the download link for the ebook.
Will it be possible for you to send over the book personally to my email Id.
Thanks in advance and keep up the excellent work.
Thanks & Regards
Shakila.
Muhammad Asif says
June 7, 2015 at 11:47 pmThanks Pankaj, I have received this excellent book. May ALLAH keep you excellent work.
Amitabh Mandal says
May 23, 2015 at 7:55 amHi Pankaj,
I have subscribed to the link however I did not recieve the download link for the ebook.
Will it be possible for you to send over the book personally to my email Id.
Thanks in advance and keep up the excellent work.
Thanks & Regards
Amitabh Mandal
vincenzo says
May 17, 2015 at 8:29 pmwhy i can’t download this book?
Pankaj says
May 18, 2015 at 12:18 amIf you have subscribed to the Email Newsletter, you should get the download link after confirmation.
Krishna says
May 25, 2015 at 5:19 amHi Pankaj,
I have already subscribed to the Email Newsletter some, and trying again for subscribing then getting message “you are already subscribed” . Then how to download it who has already subscribed.
Pankaj says
May 25, 2015 at 7:31 amYou must have got the link in email to download the eBook.
ChrisLoveIT says
May 14, 2015 at 12:37 pmThank you 🙂
Lawrence says
May 8, 2015 at 8:57 amthanks
Wells Lee says
April 29, 2015 at 1:30 ami just already download the eBook,very usefully , thank you for share this valuable resource.best wish to you and i will continue to subscribe.
Mohd Asad Khan says
April 28, 2015 at 3:49 amHi Pankaj
Thanks For Sharing the book,this book is really good revision material.
Could you please mail me the spring ebook download link.
Regards
Mohd Asad Khan
Pankaj says
April 28, 2015 at 7:40 amI see that you have subscribed today, you will get the welcome email with Spring eBook download link tomorrow.
Wells Lee says
April 29, 2015 at 1:47 amhi pankaj
mail me too,thanks a lot.
Vamshikrishna says
April 26, 2015 at 11:53 pmHi Pankaj,
I gave my emailId for downloading the design patterns e-book.could you please help me regarding this,
Thanks in advance.
Regards,
Vamshi
Serene Elizabeth says
April 15, 2015 at 9:19 pmCould you pleasde mail me the Java Design Patterns ebook? I am unable to download it
dinesh says
April 6, 2015 at 11:12 pmhai Pankaj
i got the download link but i am getting the error message ” This webpage is not available ”
Can you check it ???
Regards
Dinesh
jatinder says
March 16, 2015 at 11:08 pmPlease send me the Servlets notes preferred pdf.
I have problem in Cookies ,Session.
I also want to upload / download multiple Files in database using servlets.
Could u please also send be the code for the Pic down;load and upload in database using PHP and Servlets
Regards
Jatinder
Rohan says
March 4, 2015 at 10:02 pmHey Pankaj ,
Could you please send me Spring ebook download link…I already subscribed for newsletter.
-Rohan
Girish says
February 16, 2015 at 1:00 pmHey Pankaj ,
Could you please send me java design pattern ebook download link…I already subscribed for newsletter.
-Girish
Pankaj says
February 17, 2015 at 7:02 amHi Girish,
Looks like some issue with your subscription, I would request you to unsubscribe and subscribe again to get the email. There are a lot of important emails in the way that you won’t want to miss out.
Girish says
February 17, 2015 at 9:15 amPankaj, Thank you for quick reply. I just did what you told me to do.. Now Waiting for E book download link 🙂
-Girish
Raghu says
February 15, 2015 at 10:06 amI didn’t get any download link. Could you please send me one.
pratik says
February 14, 2015 at 3:13 amvery useful and concise ebook 🙂
Mahesh says
February 13, 2015 at 9:31 amThank u very much, design pattern pdf helps me lot. If you have any book on other java topics please share.
/mahesh
Mahesh says
February 12, 2015 at 11:49 amHi Pankaj,
I am seeing your post regularly. I have taken more material from your site except this Java Design pattern book. Can you send me the link for Java Design pattern eBook to my email address.
Thanks,
Mahesh
nhkim says
February 4, 2015 at 9:01 pmplz send email
Kiran says
January 30, 2015 at 2:11 amPlz send me EBook
Thanks
Komal Walia says
January 25, 2015 at 9:02 pmHi,
Please send me the link of the pdf as I haven’t received it yet. Neither has it arrived in my spam folder!
Thanks in advance,
Komal
charu babbar says
January 24, 2015 at 9:10 pmPlease send the pdf
Bijoy says
January 23, 2015 at 4:12 amPankaj, Can you please email me the pdf please?
I had subscribed using facebook link.
Thank you,
Bijoy
pooja mishra says
January 21, 2015 at 10:54 pmHi Pankaj,
I have registered to download “Java Design Patterns eBook” but haven’t received download link. Could you please send me over one ?
Thanks,
Pooja
Pankaj says
February 17, 2015 at 8:34 pmI have checked and confirmed that email has been sent to your email id. Please check Promotion tab or spam folders since you use Gmail.
ashutosh sabnekar says
January 21, 2015 at 5:52 amHi ,
I subscribed for the Newsletter but did not get the download “Java Design Patterns eBook” link.
Please send a proper link to download.
lianzi says
January 9, 2015 at 9:48 pmcan i translate the ebook into chinese?
Pankaj says
January 9, 2015 at 9:56 pmPlease send me an email with complete details, what is your intended use etc.
AbdulShameer says
January 3, 2015 at 7:39 amHi Pankaj. I have been subscribed but i did not receive the link of java Design Patterns.Checked in spam too. Can you please help me out.
Sachin Shukla says
December 27, 2014 at 10:50 amHi Pankaj,Many thanks for the great articles.
subrat pandey says
December 24, 2014 at 5:10 amHi Pankaj,
I haven’t yet received the download Link mail for Design Patterns book.
I have already subscribed to the news letter.
Can you please help me.
Pankaj says
December 24, 2014 at 8:45 amThe email has been sent to you, please check your Spam folders.
srinivas nalla says
December 24, 2014 at 4:21 amThank u very much, i am looking forward to understand design patterns. this pdf helps me lot
Unisa Sesay says
December 21, 2014 at 8:42 amHi Pankaj,
Many thanks for the book. I am a newbie on computer science coming from an Electrical Engineer Background.
I really appreciate your selfless effort in putting together this wonderful website. It makes some of determined as ever to programming.
Thank you very much.
Good luck.
Best regards,
Unisa
Siby says
December 21, 2014 at 5:37 amHi Pankaj,
The e-Book looks very informative. Thanks a lot.
Siby says
December 21, 2014 at 5:35 amHi Pankaj,
I am able to download the pdf. It is indeed a very useful stuff. Thanks a lot!!!
Amar Malik says
December 21, 2014 at 1:19 amHi Pankaj,
Please send me the link of your design pattern book link.
Thanks
Andrei says
December 20, 2014 at 10:42 pmHello, Pankaj
Thank you for your interesting and useful book on Java Design Patterns.
It came to my attention that there is no class diagram of abstract factory on page 25.
Please refer to screenshot below.
Best regards,
Andrei
Pankaj says
December 21, 2014 at 12:10 amThanks, i will check it out and update if required.
Zhenia says
December 20, 2014 at 6:06 pmThere is no Object pool patern in the book. Or maybe i miss something. I did not find it in the contents in creational designs part.
Himanshu says
December 20, 2014 at 8:36 amHi Pankaj ,
I did not get mail or may be deleted by chance Can i get it again ?
Thanks
Himanshu
Himanshu says
December 20, 2014 at 8:34 amThanks Pankaj for writing book .Can i get that mail again ?
Pankaj says
December 20, 2014 at 10:38 amI will send it to you in email.
Himanshu says
December 20, 2014 at 9:36 pmThanks Pankaj Book is very nice 🙂
Arvind says
December 18, 2014 at 1:23 amHey Pankaj,
Thanks for all your tutorials, i usually refer your site for java/struts/spring/hibernate/jquery. It one of the best sites
I just downloaded design patterns book, n i will surely share the feedback soon after reading it.
You are doing a great job friend. keep the good work up.
Thanks again, Arvind
Shaik says
December 17, 2014 at 12:18 amI’ve been looking something like this for a long time from you and thank you for the wonderful e-book. And btw, the it took less than a minute to get this book .. I just subscribed and confirmed my subscription and the 2nd mail contain the link.
Appreciate your help in educating folks like me…
Thanks.
Jitender says
December 16, 2014 at 11:47 pmI am not able to download the design pattern book despite being the subscribed user. Kindly suggest.
Pankaj says
December 17, 2014 at 12:44 amFor all the existing subscribers, I had sent out an email with subject “Java Design Patterns eBook” on 10th December. If you didn’t get it, please check your spam folder. For Gmail users, check Promotions tab. Make sure to add my email to contacts to avoid this in future too.
AJ says
December 16, 2014 at 7:39 pmI subscribed to the mailing list, and within 2 minutes I got the link to the eBook. I have not read the eBook yet, but it seems very “developer-friendly” and concise.
Thanks for the eBook.
To other readers: This is not a scam, this is not a cheap way to collect email addresses – there is indeed a high quality eBook that is sent to your e-mail address.
Pankaj says
December 16, 2014 at 9:12 pmThanks Aj, I was waiting for someone to comment like this. After putting all this effort, comment like below from “Constantin Ivanov” really feels bad… I agree that people get impatient, but after getting the eBook, he should have come back and commented that it’s not a scam or something to trick anyone.
Kiran says
December 15, 2014 at 5:13 amI got this book, this is awesome. The information available in this book, that I didn’t found in any other blog Thank you.
Marimuthu says
December 15, 2014 at 4:41 amHi Pankaj,
I am seeing your post regularly. I have taken more material from your site except this Java Design pattern book. Can you send me the link for Java Design pattern eBook to my email address.
Thanks,
Muthu.
Nguyen Nguyen says
December 14, 2014 at 8:28 pmThanks for sharing. It helps developers to understand clearly and easy to use Design Patterns.
Harsh Kanakhara says
December 14, 2014 at 11:24 amThank You Sir. This is great book on Java Design Patters. Compressed in 130 Pages only with a precise information. it helps me a lot
Ayush Goel says
December 12, 2014 at 12:29 amCan I have the link Please , I have added myself to subscription list …. Thanks in advance 🙂
Srini says
December 11, 2014 at 9:33 pmHi Pankaj,
i am regular follower of your posts. i have tried couple of times from last two days to download Design patterns pdf. but i did not get any download link mail .
Pankaj says
December 11, 2014 at 11:21 pmHi Srini, You need to subscribe to my newsletter to get the email for download link. I checked myself and seems like you are not subscribed.
Also once you are subscribed, since you are using GMail, chances are my emails might land up in Promotions tab. Please use below guide to move my emails to primary tab to fix this once and for all.
http://kb.mailchimp.com/delivery/deliverability-research/place-emails-in-primary-tab-in-gmail
Anas S. Awdan says
December 11, 2014 at 5:15 amLet us check it!!!!!!
Constantin Ivanov says
December 11, 2014 at 12:54 amHello
something went wrong
i’ve registered to download “Java Design Patterns eBook” but haven’t received download link
is that a joke for cheap email adresses collection?
Pankaj says
December 11, 2014 at 4:40 amNo it’s not a joke, I am setting things up. You should get an email with download link tomorrow. If you won’t get it, just comment here and I will send it over to you personally.