Why I can't to the previous page by pressing the back only one button only once?

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• Why "boolean equals (Object obj);" the fire only once?

  In the code below, I add 4 items to "db", but "equals()' in KjPair method, only fires once. Why?

  .....
  Set<KjPair> db = new HashSet<KjPair>();
  db.add(new KjPair(1, 9));
  db.add(new KjPair(2, 8));
  db.add(new KjPair(8, 2));
  db.add(new KjPair(4, 6));
  System.out.println("db length --> " + db.size());
  ....
  
      static class KjPair {
          int kj1, kj2;
          KjPair(int a, int b) {
            this.kj1 = a;
            this.kj2 = b;
          }
  
        @Override
        public boolean equals(Object obj) {
          KjPair pair = (KjPair) obj;
  
          if((this.kj1 == pair.kj1) && (this.kj2 == pair.kj2)) return true;
          if((this.kj1 == pair.kj2) && (this.kj2 == pair.kj1)) return true;
          return false;
        }
        @Override
        public int hashCode() {
          System.out.println("----hashCode()---");
          return 1;
        }
  }

  My fundamental data structure is a coupling of two characters where (A-> B) is the same as (B-> A).
  My problem is that my text input files are very large and very crowded, and each character may be about 2000.
  Some pairings could be repeated a hundred times.
  For example:
  A B
  B A
  J K
  Y - Z
  You must create a set of size 3.
  
  In the above code, I get conflicting information.
  The size of "db" is correct. Even if I added 4 points, the size of the "db" is 3.
  But 'equals()' is triggered only once.
  I expect this fire 3 or 4 times.
  
  My problem is more complex. This code is a complete disaster and I'm completely stuck.
  I need to start by understanding why 'equal()' is triggered only once.
  I punted implemented 'hashCode()', but it never take a shot anyway. Until he does, I will focus on "equals().
  
  Thank you.

  hunter9000 wrote:
  Must override hashCode() whenever you override equals(), such as when you use your objects in a collection based on the hash, who you are. My suggestion is to give a real implementation hashCode() and then see if you still have problems with equals().

  Ironically, the "return 1" hashCode() he provided here (which, while providing a correct behavior, will lead to slow HashMaps and HashSets) will ensure that he does not see the behavior he complained, while a good hashCode() has a high probability of causing said behavior - which, in itself, is good and desirable.

  A good hashCode() means fewer calls equals(), that is pretty much the whole point from hashCode().

• Anyone know why I can't buy the Portugal LR6? When I select the desktop application of most place hiden in the site Web of the page turns out to be empty! Other areas which is not the case, but since I am connected to the Portugal I'm not able to purchase

  Anyone know why I can't buy the Portugal LR6? When I select the desktop application of most place hiden in the site Web of the page turns out to be empty! In other regions that is not the case but since I am connected to the Portugal, I'm not able to buy elsewhere.

  Please check the availability of https://www.adobe.com/content/dam/Adobe/en/products/creativecloud/cc/pdfs/cc-availability-matrix.pdf

  Concerning

  Stéphane

• I downloaded and installed creative cloud with no problems. From the window of creative cloud cannot display the APPS page (while other 'Home', 'Community' can be seen). This is why I can't select the application to be updated. Thanks for your help

  I have download and install creative cloud with no problems. In the window of creative cloud cannot display the APPS page (while other 'Home', 'Community' can be seen. This is why I can't select the application to be updated. Thanks for your help

  Please refer to the threads below where the issue has been addressed:

  Re: desktop is not displayed Panel apps? PC

  Missing Creative Cloud Desktop applications tab

• why I can't open my facebook page

  Why I can't open my facebook page and other pages of the Web site are open easily

  Hello

  (1) don't you make changes to the computer before the show?

  (2) is the computer connected to a domain?

  (3) is the issue limited with only the facebook site?

  (4) what browser do you use? If internet Explorer then which version?

  If you are using internet explorer, follow these steps:

  Method1: Try to open Internet explorer in compatibility mode

  http://Windows.Microsoft.com/en-us/Internet-Explorer/products/IE-9/features/compatibility-view

  Method 2: Try to use facebook-add mode:

  http://Windows.Microsoft.com/en-us/Windows7/Internet-Explorer-Add-ons-frequently-asked-questions

  For reference:

  Can't access some Web sites in Internet Explorer

  http://support.Microsoft.com/kb/967897

  I hope this helps.

• why I can't download the free trial version of Adobe Acrobat Pro DC?

  why I can't download the free trial version of Adobe Acrobat Pro DC?

  Available downloadable Setup files:

  • Suites and programs: CC 2015 | CC 2014 | CC | CS6 | CS5.5 | CS5 | CS4, CS4 Web Standard | CS3
  • Acrobat: DC, XI, X | Suite X | 9,8 | 9 standard | 8 standard
  • Captivate: 9 | 8 | 7 | 6 | 5.5, 5 | 1
  • Cold Fusion: 11: 10 | 9.0.2 version 9.0.0, 9.0.1, 8.0.1, 8.0.0, 7.0, 6.1, 6.0, 5.0, 4.0
  • Contribute: CS5 | CS4, CS3 | 3,2
  • FrameMaker: 12, 11, 10, 9, 8, 7.2
  • Lightroom: 6.4|  6| 5.7.1| 5 | 4 | 3
  • Photoshop Elements: 14,13,12,11,10 | 9,8,7 win | 8 mac | 7 mac
  • Premiere Elements: 14,13,12,11,10| 9, 8, 7 win | 8 mac | 7 mac

  Download and installation help links Adobe

  Help download and installation to Prodesigntools links can be found on the most linked pages.  They are essential; especially steps 1, 2 and 3.  If you click on a link that does not have these listed steps, open a second window by using the link to Lightroom 3 to see these "important Instructions".

• why I can not get the same apps I have on my iPad?

  why I can not get the same apps I have on my iPad?

  Because they are different versions for different operating systems.

• Why I can't open the attachment in Outlook express?

  Why I can't open the attachment in Outlook express?

  Try to save the first attachment, then try to open it.  See also www.oehelp.com/OETips.aspx#1

  Steve

• Why I can still see the files deleted and renamed on a shared directory?

  Why I can still see the files deleted and renamed on a shared directory, but my co-workers can't see them? Is there a setting on my pc that I need to change?

  Hello
   
   
  Thanks for posting your question in the Microsoft Community.
   
   
  The question you posted would be better suited in the TechNet Forums.
   
  I would recommend posting your query in the link below.
   
   

  Windows 7 networking:

  http://social.technet.Microsoft.com/forums/en-us/w7itpronetworking/threads

  I hope that the information above helps you.

• Why I can't use the nested aggregate function?

  Hello Experts,

  Why I can't use the nested aggregate function? There is not an ora-00979 group by error of expression.

  Oracle Database 11 g Release 11.2.0.4.0 - 64 bit Production

  Select

     SUM (BOX WHEN (KSD_CREATEDATE BETWEEN TRUNC((KSD_CREATEDATE)) AND TRUNC(MIN(KSD_CREATEDATE)) +60) THEN 1  ELSE 0 END) AS col

  DE TABLE_3_4

  GROUP BY STC_FIRMANO

  Thank you

  GROUP BY will manage the SUM function, but the MIN is used incorrectly - use another SELECTION to get it, or work with only with a single line. Otherwise, you could do WITH... get the SUM of SELECT MIN...

• Installation of Lightroom 6 disc, why I can't past the opening screen?

  Installation of Lightroom 6 of the disk, why I can't past the opening screen?

  Hi Calgage1,

  Please share the screenshot of the message you get, so that we can help you properly.  Meanwhile, you can try the advanced solutions to errors in connection with Adobe Creative Cloud and Creative Suite applications & creative cloud sign me or asking to connect you several times

  Waiting for your response.

• why I can not change the method of payment and my billing information?

  why I can not change the method of payment and my billing information? By clicking on the buttons right just does not work

  Manage your membership and your payment. Creative cloud

  https://helpx.Adobe.com/x-productkb/policy-pricing/membership-subscription-troubleshooting-creative-cloud.html

  To the link below, click on the still need help? option in the blue box below and choose the option to chat or by phone (do not support the weekend)...
  Make sure that you are logged on the Adobe site, having cookies enabled, clearing your cookie cache.  If it fails to connect, try to use another browser.

  Creative cloud support (all creative cloud customer service problems)
  http://helpx.Adobe.com/x-productkb/global/service-CCM.html ( http://adobe.ly/19llvMN )

• Why I can't use the trial to convert PDF to Microsoft Word files

  Why I can't use the trial to convert PDF to Microsoft Word files

  Hi cathiechua,

  You should definitely be able to convert PDF files to Word using Acrobat format. What happens when you choose file > save as other > Microsoft Word > Word Document?

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• why I can't see the bar codes in pdf format

  why I can't see the bar codes in pdf format

  Very difficult to say what the issue is without seeing the actual file. Could be

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• I have my photos in the F drive an external drive. LR5 records my photos in the partitioned hard drive, D drive in my computer. Why I can't change the dafault in LR5 player?

  I have my photos in the F drive an external drive. LR5 records my photos in the partitioned hard drive, D drive in my computer. Why I can't change the dafault in LR5 player?

  When I 'import' a RAW/DNG file, the file gets automatically saved the item COPIED in my D drive under "My pictures" folder This info is available on the left panel. Instead, I want the file to go in my F drive which is my external hard drive.

  Lightroom help: explains how to import photos to a specific location. Scroll down to section 5, «Say Lightroom where to put your photos» Lightroom help | Import photos from a camera or card reader

• Why I can't use the procedure in the select statement

  Why I can't use the procedure in the select statement

  And you may not usa a SQL function if it has out parameters

  SQL> create function myfun(p1 in out number) return number is
    2  begin
    3  p1:=1;
    4  return 2;
    5  end;
    6  /
  
  SQL> select myfun(5) from dual;
  select myfun(5) from dual
         *
  ERRORE alla riga 1:
  ORA-06572: Function MYFUN has out arguments
  

  In fact, the problem is that an output parameter is passed 'ref' and not 'val '...

  Max