Hash code generation and hashing

How can we use object as a key in a collection by overriding the hashcode() and equals() method. I do not understand the logical real image behind it.

AnjanN wrote:
It may be the same for objects without equality also

How can be possible that two different objects with the same codes...

Easily. You can implement hashcode() as "return 1;", it just badly run and ignore completely the idea of hash in the first place, but this will work.
It's the Equals () method that is used to see if the 2 keys are equal.

Tags: Java

Similar Questions

  • Template toolkit interface (MIT) code generation defective in simulink

    Hello

    I'm running into a strange down Simulink Coder and I can't tell if this is due to a NOR / MIT but or a general problem of Simulink Coder.

    System:

    Windows 7

    MATLAB/Simulink R2013b w / Simulink encoder

    MIT 2013 SP1

    File = "NIVeriStand_VxWorks.tlc" target system

    Not that we even not at this point but... my "WindRiver GNU Toolchain Installation Path' is properly configured for: c:\gccdist\supplemental\setup-gcc.bat

    The attached picture shows the error I get:

    «Error: character not valid in: ' SMA_model/SMA Driven arm/wire/Heat Transfer Model / ', exit code generation.» "The name may not end with / character.

    In the picture you can see that the subsystem of "Heat transfer model" actually doesn't have a ' / ' in the name.

    Anyone who has never run on this problem of generation of code before? If so, any suggestions on how to get around?

    Thank you.

    Turns out there's a block in a subsystem that is somehow got renamed "". "" This can be found with the running,

    x = find_system ("model SMA_model/SMA Driven arm/wire/Heat Transfer / ', 'LookUnderMasks', 'all'")

    or running,

    hilite_system ("model SMA_model/SMA Driven arm/wire/Heat Transfer / '") % Note the space at the end

    Once the name was changed to something sensible built as planned...

  • I have ipod shuffle 2nd generation and need new charger (dock) can still buy these?

    I have ipod shuffle 2nd generation and need new charger (dock) can still buy these?

    Apple no longer sells the official replacement of the USB cable with the "cradle".  Do not buy the replacement USB docking cable for the current 4th gen (3rd generation) iPod shuffle, because it does not work with 2nd gen shuffle (the connector is different).

    There are 3 replacements of party, for example

    http://www.Amazon.com/eForCity-Sync-Charger-cradle-shuffle/DP/B0042EB270/

    There are other products similar, including some who do not have the cradle, and some who do not even have a cable (like this one)

    http://www.eBay.com/ITM/USB-data-sync-charger-cable-for-Apple-iPod-shuffle-2nd-G balances - / 221546931454

    Ensure that the product is described as being the shuffle gen 2  I'd go with one that has a docking station, because it maintains the shuffle at a constant specific position compared to the socket, which can be important for a shuffle gen 2.

  • 2nd generation and 6th gen Ipod touch.  Can I continue to use both?

    I have an Ipod Touch 2nd generation and get a 6th generation one for Christmas.  I want to continue to use both.  I heard that the 2nd generation will not be able to use the most recent ios.  How can I use both?  Of course, it takes a lot less memory also.  I have not would care if they are not sync, but I don't want to plug an and destroy the contents of the other.  Should I configure them with different user accounts or?

    You want to keep the same Apple ID That's what your content is about.

    You can very easily manage different content on each device. I manage different content on my ipad and iPod and they have different iOS.

    Your other older will continue to operate, he won't be able to do everything that the 6th gen due to having an older iOS and probably less apps that can be installed on it.

    And then if you use it just for the music, there are no descendants.

  • niHSDIO dynamic generation and Acquisition using LV configure Trigger VI

    Hello!

    My experience is limited within the environment of digital programming; Nevertheless, I have worked on this problem for a few days and would appreciate some comments if possible.

    I am trying simply to generate and acquire a duty cycle of 50% of 8 MHz TTL pulse train on a PIN DIO of the PCI-6541 and acquire back from the signal on another axis of DIO. I have a connector corresponding to the embedded 6541 VHDCI connector which of course the generation and acquisition DIO welded pins to provide a loopback effect.

    In short, I use the niHSDIO configure Trigger VI (instance--> start Trig: SW), niHSDIO send software Edge Trigger VI and write Named Waveform VI (instance--> data: 1 D U32) in the generation section. For the section of the acquisition, in short, I use the VI of waveform Fetch niHSDIO (instance--> single record: WDT).

    I see results in the waveform acquired showing the generated and acquired digital TTL pulse on the respective DIO pins train, but I can't seem to get my 8 MHz frequency requirement. In addition, the lower part of the assignment of pin DIO, more frequency. Unfortunately, due to the configuration system required, I have confined myself to pin 12 DIO for the generation of digital pulses. Even with a 50 MHz clock frequency, I'm ~ 6 kHz of frequency acquired max. I looked at changing the parameters of the wave form VI named write, but it is not possible because the VI call a library function node. I also tried to generate a waveform of 8 MHz through a VI of generator of digital model, but I do not believe, you can trigger on generated waveforms? It seems that you must generate data using a simple loop to as a counter and sending the result to the waveform VI named write. Are there other ways I can simply generate and acquire a digital signal of TTL of 8 MHz (no external connection)?

    In any case, any kind of feedback would be greatly appreciated.

    Thanks in advance for your time.

    Dan

    Dan,

    Sorry about the nomenclature.  I usually use 0 x or 0 b for indication of radix, it is not necessarily a kind of standard, just what I used in my old days of the Assembly.

    Looks like you have a knowledge about the data.  Basically the material is just save in DRAM an array of words of 32 bits, with each bit corresponds to a data channel and each element being generated to the sampling clock rate you enter to your vi.  Everything else is just easy data manipulation or usage.  The interleaving method is just as I like to create a toggle model.  You can easily do a loop with an inverter and feedback node or use on the construction in screws to signal generation.  In addition, you can use the software digital waveform editor or control panel test to generate the county or toggle modes.

    Give us an update when you enter the laboratory and let us know if you encounter any other disorder.

  • What are the names of code pine and forward-looking numbers?

    I copied a schematic symbol in my user database, changed the part number and saved. Then I placed the component in the diagram and pin code names and numbers have been totally screwed up. All the names vertical and all numbers were turned horizontal.

    See the attached picture. On the left is the image displayed in the dialog box "select a component. On the right is what I get when I place the component.

    WYSINWYG!

    How can I fix it, and this will happen every time I have place a component with vertical labels?

    Phil

    Hi Phil,

    I opened the component in the symbol Editor, you can choose the orientation of the name of each axis in the spread sheet view. You need to check the orientation of the name of each axis (horizontal or vertical), what would be the reason for what happened to your component. Other parameters are adjusted to the same place as length of PIN, too hidden pins and so forth.

    Please let me know if you have any other questions.

    Mahmoud W

    National Instruments

  • Error code = 16600 and error code = 17110

    Error code = 16610 and error code = 17110

    The child's account cannot check e-mail.

    Your account is not ready.
    It seems that your mother has finished setting up parental control for your account settings. Click "Access the parental control settings" to complete the process and access your account.

    Hotmail Setup incomplete.

    Sorry there was a problem to apply your parental control settings to your Hotmail account. Try again later, go to your Hotmail account and follow the instructions.

    Parent cannot delete the account:

    Colton: Sorry, the service is not available now. Please try again later. Error code = 17110.

    Colton: Your child Hotmail can not change immediately. We can send you a link to change the Hotmail settings, or you can try again later. Error code = 16600.

    Family safety is NOT installed.

    Primary school/Parent = account * address email is removed from the privacy *

    Child account = * address email is removed from the privacy *

    Does not work below:

    When you remove your child from the parental control, your child's Hotmail settings could not update. We are sorry for this topic.

    Update your child's Hotmail settings:

    1. ask to connect with their Microsoft account.

    2. ask to go to https://familysafety.microsoft.com/krl/hmnotify.aspx?p=OmaCuA3IIiM8WtcicpmFoCHjiR6rsa1 * oDgqRar4GKA6vMBO % 5EsudS % % 5EXf3ZQHYe 5Ep and follow the instructions on the screen.

    If your child cannot always use Hotmail, please wait a few minutes and try again.

    Thank you for using parental controls.

    Hello

    Please ensure that you use the latest version of the parental controls of Windows (16.4.3505.0912) for the child's computer. You can download the latest version in the link below:

    http://Windows.Microsoft.com/en-us/Windows-Live/Essentials-home

    Please let us know if the problem persists after you have installed the client.

    Thank you!

  • What is error code 138266 and 0F00:0244 and 0F00:1F44 messages

    the old computer crashed and comes with a blue screen saying reboot in safe mode, but that does not work. the analysis bed error code 138266 and two messages from 0F00:0244 and 0F00:1F44 indicating a block is inoperative. Does this mean the computer is more repairable or is there a way to address these problems. Thank you.

    Hello

    1. have there been recent changes to the computer before the show?

    2. what operating system is installed on your computer?

    Method 1: I suggest you try the steps from the link, which will help you resolve stop (blue screen) error in Windows 7

    http://Windows.Microsoft.com/en-us/Windows7/resolving-stop-blue-screen-errors-in-Windows-7

    (For Windows Vista)

    Method 2: How to fix a computer that does not start.

    http://Windows.Microsoft.com/en-us/Windows-XP/help/Setup/how-to-fix-computer-that-will-not-start

    (For Windows XP)

    Hope this information is useful.

  • Realtek card gives the error code 10 and does not work since the change of satellite

    How can I fix the realtek on my computer card. It was the dial upwards, after he took off and replace it with satellite my computer wouldn't access internet
     
    How can I fix the realtek on my computer card. He has been on dial-up, after taking if off dial-up and replaceing with satellite my computer wouldn't access internet. Noted code 10 and realtek does not work. So a please help fix me my computer.

    Hello

    What operating system is installed on the computer?

    The Code 10 error code is generated when the Device Manager has not enough information or error that spread upwards by device drivers is not recognized by Device Manager. In addition, this error may occur if one of the pilots who needs the unit does not start. If multiple drivers are used by a particular device, it can be difficult to determine which failed.

    See the following article:

    Description of errors related to the 10 Code that generates the Device Manager in Windows on computers

    http://support.Microsoft.com/kb/943104

  • KB2442962, KB982214 and KB2345886 updates fail in code 800b0100 and 8007065E. Upgrade system preparation tool does not resolve. Windows Update Troubleshooter does not solve.

    Hello. I recently acquired a new computer with Windows 7 Home Premium x 64. At first startup, I ran Windows update. As usual, a large number of updates have been downloaded and installed. Reboot, Windows update run and failed with the failure of the code 800b0100 and 8007065E. By clicking on the error codes led to a suggestion that 800b0100 could be solved by downloading and running the "System Update Readiness Tool" (KB947821). The help text for 8007065E says nothing useful.

    I have downloaded and run the tool preparation system update, but after that Windows Update has failed once again.

    Deselecting all individual updates but I finally managed to get everything except three to install. The other three are KB2442962, KB982214 and KB2345886.

    I ran the system update tool several times.

    I ran the "Windows Update Troubleshooter". He noted that he has made no changes to the system.

    I downloaded the updates individually and run them manually.

    They do not always succeed.

    Grateful for any suggestion.

    Hey, Marc P

    Thanks a lot for your offer to help. If I had checked this thread earlier I would have taken you to this topic.

    However after trying various other ineffective solutions proposed by MS supports (such as installation of downloads in 'safe mode', which produces the error message "this service cannot be started in safe mode") I ended up doing a reinstall instead of the BONE. That fixed it.

    Thanks for all your attempts to help.

  • Cannot access Pathname you have the appropriate permissions. Cannot download updates gives error code 643 and error code 5. Always gives access denied.

    Cannot access Pathname you have the appropriate permissions. Cannot download updates gives error code 643 and error code 5. Always gives access denied. You do not have the appropriate permissions. I am the administrator. Change all the complete control. Any other suggestions? Possible virus?

    Hello

    You are unable to download the updates?

    Try the following steps to resolve the problem:

    Method 1: Temporarily disable any security (including firewalls) software and check if the problem persists.

    Check out these links:
    http://Windows.Microsoft.com/en-us/Windows7/turn-Windows-Firewall-on-or-off

    http://Windows.Microsoft.com/en-us/Windows7/disable-antivirus-software

    If disabling the security software solves the problem, then contact the manufacturer of the specific security software to fix the problem.

    Important: Antivirus software can help protect your computer against viruses and other security threats. In most cases, you should not disable
    your antivirus software. If you do not disable temporarily to install other software, you must reactivate as soon as you are finished. If you are
    connected to the Internet or a network during the time that your antivirus software is disabled, your computer is vulnerable to attacks.

    Method 2:
    See the article mentioned below and run the Fixit diagnostic tool to fix the error 643.

    You receive error code 80070643 0 x or 0 x 643, code error when you use the Windows Update or Microsoft Update Web sites to install updates:
    http://support.Microsoft.com/kb/958052


    Kind regards
    Afzal Taher-Microsoft Support.
    Visit our Microsoft answers feedback Forum and let us know what you think.

  • Windows 7 64-bit updates KB980408 and KB981793 fails with the error code 8007065E and 800 b 0100

    KB980408 updates Windows 7 64 bit and KB981793 fail with error code 800b0100 and 8007065E respectively.

    Help, please

    This is a fresh (blank) load, THAT No. SW Antiviral has been installed.

    I see. Start by reading...

    Cleaning a compromised system
         http://TechNet.Microsoft.com/en-us/library/cc700813.aspx

    Personal data backup (which none should be considered 100% reliable at this point) then format the HARD disk and do a clean install of Windows.  Please note that a repair installation (upgrade AKA on-site) won't fix this!

    HOW to do a clean install of Win7: see "using the custom installation option" and formatting the hard drive section ofhttp://windows.microsoft.com/en-us/windows7/Installing-and-reinstalling-Windows-7

    Once installed the clean, you will have the equivalent of a "new computer" in order to take care of everything on the next page before connecting the machine to the internet or one local network (i.e. other computers) otherwise and before using a flash drive or the SD card that is not brand new, or has not been freshly formatted:

    4 steps to help protect your new computer before going online
         http://www.Microsoft.com/security/pypc.aspx

    NB: No matter what Norton or McAfee free trial which is preinstalled on the computer when you bought will be reinstalled (but invalid) when Windows is reinstalled. You MUST uninstall the trial for free and download/run the removal tool before installing updates, Windows Service Packs, or updates IE and before installing your new anti-virus application (which will require WinXP SP3 must be installed).

    Norton Removal Tool
         FTP://ftp.Symantec.com/public/english_us_canada/removal_tools/Norton_Removal_Tool.exe

    McAfee Consumer product removal tool
         http://download.McAfee.com/Products/Licensed/cust_support_patches/MCPR.exe

    If you need help, please start a new thread in this forum: http://social.answers.microsoft.com/Forums/en-US/w7repair/threads

    If these procedures look too complex - and there is no shame in admitting this isn't your cup of tea - take the machine to a local, good reputation and stand-alone computer (that is, not BigBoxStoreUSA or Geek Squad) repair facility.

    ~ Robear Dyer (PA Bear) ~ MS MVP (that is to say, mail, security, Windows & Update Services) since 2002 ~ WARNING: MS MVPs represent or work for Microsoft

  • Windows update fails - the file specifies some updates not installed - 9 updates failed, code 80073712 and code 78(f).

    Windows update fails - the file specifies some updates not installed - 9 updates failed, code 80073712 and code 78(f).
    The update runs, and then told me that updates failed to install update automatik research, I had more failed updates that havew installed correctly.

    Hi Ben Dean,

    Use the (SFC.exe) System File Checker tool to determine which file is causing the problem and then replace the file.

    To run the System File Checker, follow these steps:

    1. Click Start and type cmd in the box start the search.

    2. in the area of results, right-click cmd.exe, and then click Run as administrator. You will be asked to type the password for an administrator account. If you are the administrator or type the administrator password, click on continue. Then click on continue.

    3. at the command prompt, type Sfc/scannow, and then press ENTER.

    For more information, see the following Microsoft article:

    This article describes how to use the tool (SFC.exe) System File Checker to fix the system files missing or corrupted on Windows Vista or Windows 7.

    How to use the System File Checker tool to fix the system files missing or corrupted on Windows Vista or Windows 7
    http://support.Microsoft.com/kb/929833

    I hope this helps!

    Thank you, and in what concerns:
    Shalini Surana - Microsoft technical support.
    Visit our Microsoft answers feedback Forumand let us know what you think.

  • Windows Vista Service Pack 2 (KB948465) I get the error code 80092004 and it was not able to load.

    Windows Vista Service Pack 2 (KB948465) I get the error code 80092004 and it was not able to load.

    Free unlimited installation and compatibility support is available for Windows Vista, but only for Service Pack 2 (SP2). This support, initially planned to end on November 26, 2009, has been extended until February 26, 2010. Availability of support chat or messaging differs depending on your location. Some questions may require that more support for which he is advanced a charge.  Go to http://support.microsoft.com/oas/default.aspx?prid=13014&gprid=582034 & select appropriate category (i.e., download problem;) Installation problem; Problems after installing a service pack). ~ Robear Dyer (PA Bear) ~ MS MVP (that is to say, mail, security, Windows & Update Services) since 2002 ~ WARNING: MS MVPs represent or work for Microsoft

  • Error code: 646 and error Code: 643

    When I try to install the updates of security for microsoft office 2007, a security update for Microsoft Works 8, update for Microsoft office word 2007, a security update Microsoft .NET Framework 1.1 Service Pack 1 for Windows XP, Vista, Server 2008 and update for microsoft office outlook 2007 Junk Emal filter , 7 and Server 2008 R2 I'm getting two error codes. (Code 646 and Code 643) Next to them, he said encounteredan Windows Update unknown error.  Can someone help me please. I tried to install the updates of thease for 1 or 2 months he is a. I have a Microsoft Windows Vista Home Premium. All of these updates are important or recomanded. They are 10 updates!

    In re the Office updates, see http://social.answers.microsoft.com/Forums/en-US/vistawu/thread/6e716883-7af4-4a9f-8665-2f4dd57eee8d

    In re update .NET Framework security, see...

    When installing updates using Windows update or Microsoft Update you may receive error 80070643 0 x or 0 x 643 (23 Oct-09)
    http://support.Microsoft.com/kb/976982 ~ Robear Dyer (PA Bear) ~ MS MVP (that is to say, mail, security, Windows & Update Services) since 2002 ~ WARNING: MS MVPs represent or work for Microsoft

Maybe you are looking for