text: 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. 🙂
  Can you please send me bothe java pdf and design patterns pdf? Thanks for outstanding content.
  Can you please send me the link for download
  Hi Pankaj,
  Can you please email the pdf to me.
  Regards,
  Shashi
  yes guys i am your follower and i need differrent types of pattern in java
  Hi Pankaj,
  Please send me the link of your design pattern book link.
  Thanks
  HI Pankaj,
  Could you please share me the link of design pattern book link.
  Thanks,
  Dinesh
  Thanks Pankaj
  Please send me the ebook
  Hi.
  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.
  There 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.
  I have subscribed and got a link to download but that link is not working.
  i just tried myself and it’s working. Please check again.
  Thank you, Pankaj.
  Hi,
  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;
  }
  }
  All 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
  Hello 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
  I come from different programming language background, looking to gain proficiency in Java by reading upto some relevant details
  even with double checked locking you can have more than one instances, but it has been fixed Java 5 onward by declaring instance as volatile.
  Bingo!
  Thank 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.
  I need book on russian language please!!!
  Hello 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
  I subscribed and received mail, but the link says webpage not available,.
  Hi 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.
  Thanks Pankaj, I have received this excellent book. May ALLAH keep you excellent work.
  Hi 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
  why i can’t download this book?
  If you have subscribed to the Email Newsletter, you should get the download link after confirmation.
  Hi 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.
  You must have got the link in email to download the eBook.
  Thank you 🙂
  thanks
  i just already download the eBook,very usefully , thank you for share this valuable resource.best wish to you and i will continue to subscribe.
  Hi 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
  I see that you have subscribed today, you will get the welcome email with Spring eBook download link tomorrow.
  hi pankaj
  mail me too,thanks a lot.
  Hi Pankaj,
  I gave my emailId for downloading the design patterns e-book.could you please help me regarding this,
  Thanks in advance.
  Regards,
  Vamshi
  Could you pleasde mail me the Java Design Patterns ebook? I am unable to download it
  hai Pankaj
  i got the download link but i am getting the error message ” This webpage is not available ”
  Can you check it ???
  Regards
  Dinesh
  Please 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
  Hey Pankaj ,
  Could you please send me Spring ebook download link…I already subscribed for newsletter.
  -Rohan
  Hey Pankaj ,
  Could you please send me java design pattern ebook download link…I already subscribed for newsletter.
  -Girish
  Hi 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.
  Pankaj, Thank you for quick reply. I just did what you told me to do.. Now Waiting for E book download link 🙂
  -Girish
  I didn’t get any download link. Could you please send me one.
  very useful and concise ebook 🙂
  Thank u very much, design pattern pdf helps me lot. If you have any book on other java topics please share.
  /mahesh
  Hi 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
  plz send email
  Plz send me EBook
  Thanks
  Hi,
  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
  Please send the pdf
  Pankaj, Can you please email me the pdf please?
  I had subscribed using facebook link.
  Thank you,
  Bijoy
  Hi 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
  I have checked and confirmed that email has been sent to your email id. Please check Promotion tab or spam folders since you use Gmail.
  Hi ,
  I subscribed for the Newsletter but did not get the download “Java Design Patterns eBook” link.
  Please send a proper link to download.
  can i translate the ebook into chinese?
  Please send me an email with complete details, what is your intended use etc.
  Hello.how can i get that?🙏🏽😭
  Hi 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.
  Hi Pankaj,Many thanks for the great articles.
  Hi 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.
  The email has been sent to you, please check your Spam folders.
  Thank u very much, i am looking forward to understand design patterns. this pdf helps me lot
  Hi 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.
  Hello, 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
  Thanks, i will check it out and update if required.
  There 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.
  Hi Pankaj ,
  I did not get mail or may be deleted by chance Can i get it again ?
  Thanks
  Himanshu
  Thanks Pankaj for writing book .Can i get that mail again ?
  I will send it to you in email.
  Thanks Pankaj Book is very nice 🙂
  Hey 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
  I’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.
  I am not able to download the design pattern book despite being the subscribed user. Kindly suggest.
  For 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.
  I 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.
  Thanks 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.
  I got this book, this is awesome. The information available in this book, that I didn’t found in any other blog Thank you.
  Hi 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.
  Thanks for sharing. It helps developers to understand clearly and easy to use Design Patterns.
  Thank You Sir. This is great book on Java Design Patters. Compressed in 130 Pages only with a precise information. it helps me a lot
  Can I have the link Please , I have added myself to subscription list …. Thanks in advance 🙂
  Hi 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 .
  Hi 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.
  Let us check it!!!!!!
  Hello
  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?
  No 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.