Can a unreachable object become reachable again ?

An object becomes eligible for Garbage Collection,when it is not reachable by any instances of the program (is it ?) .So what will happen when the object's finalize() method is invoked and the object performs an operation which causes it to become accessible to reachable objects.
Thank you for your consideration.

amtidumpti wrote:
Also what if the object is garbage collected and then in the finally block it is made reachable to other objects.Will a error occur or the object will be assigned a null value ?The assumption of that question is faulty: finalize() will be run before it is actually GCed (i.e. between the moment it becomes unreachable and the moment it is GCed).
If you make it reachable in the finalize() method then it won't be GCed.
Note that this it is a very bad idea to do this, because it messes up some assumptions of the JVM. Nothing that will break the JVM, but it can have severe performance drawbacks.
Generally you shouldn't have a finalize() method at all, because it too can lead to slowdowns: managing objects with a finalize() method takes a lot more work from the JVM than "normal" objects.

Similar Messages

  • Can't select objects or items...

    I have been using InDesign CS4 (Mac version) and once in a while I pull up a document that was created in ID4, but no items can be selected, but nothing is locked. No text, no graphics, etc. I couldn't find an answer to this issue on the forums (I'm not saying it isn't here, but I couldn't find it in my searches), but just came up with a workaround if anyone else has this issue.
    Go to "links" and select one of them and then click on the "go to link" icon. Once you go to the link, all objects become live again and the document becomes fully editable.
    Hope this helps someone else.
    Anyone know what is causing this problem?
    TIA

    All your objects are on a Master Page.
    That's why when you go to the link everything is selectable. You have just gone to the Master Page.

  • I install windows 8 via boot camp but its corrept so i recover this by the bootable usb which is helping me to install windows 8 but in recovery my osx is formatted automaticly now its become a pc how can i install my mac osx again?

    i install windows 8 via boot camp but its corrupt so i recover this by the windows 8 by the help bootable usb which is helping me to install windows 8 but in recovery my osx is formatted automatically now its become a pc how can i install my mac osx again in my mac mini? please help me

    If you have a Mid 2010 model: Computers that can be upgraded to use OS X Internet Recovery. If later then see below:
    Install Mavericks, Lion/Mountain Lion Using Internet Recovery
    Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
    Boot to the Internet Recovery HD:
    Restart the computer and after the chime press and hold down the COMMAND-OPTION- R keys until a globe appears on the screen. Wait patiently - 15-20 minutes - until the Recovery main menu appears.
    Partition and Format the hard drive:
    Select Disk Utility from the main menu and click on the Continue button.
    After DU loads select your newly installed hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.
    Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed. Quit DU and return to the main menu.
    Reinstall Lion/Mountain Lion. Mavericks: Select Reinstall Lion/Mountain Lion, Mavericks and click on the Install button. Be sure to select the correct drive to use if you have more than one.
    Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.
    If you have an earlier model:
    Clean Install of Snow Leopard
         1. Boot the computer using the Snow Leopard Installer Disc or the Disc 1 that came
             with your computer.  Insert the disc into the optical drive and restart the computer.
             After the chime press and hold down the  "C" key.  Release the key when you see
             a small spinning gear appear below the dark gray Apple logo.
         2. After the installer loads select your language and click on the Continue
             button. When the menu bar appears select Disk Utility from the Utilities menu.
             After DU loads select the hard drive entry from the left side list (mfgr.'s ID and drive
             size.)  Click on the Partition tab in the DU main window.  Set the number of
             partitions to one (1) from the Partitions drop down menu, click on Options button
             and select GUID, click on OK, then set the format type to MacOS Extended
             (Journaled, if supported), then click on the Apply button.
         3. When the formatting has completed quit DU and return to the installer.  Proceed
             with the OS X installation and follow the directions included with the installer.
         4. When the installation has completed your computer will Restart into the Setup
             Assistant. Be sure you configure your initial admin account with the exact same
             username and password that you used on your old drive. After you finish Setup
             Assistant will complete the installation after which you will be running a fresh
             install of OS X.  You can now begin the update process by opening Software
             Update and installing all recommended updates to bring your installation current.
    Download and install Mac OS X 10.6.8 Update Combo v1.1.

  • HT4897 I created an alias precisely because I wanted to make it the new default name and then quickly realized it wasn't possible. How long after deleting the alias will it become available again so that I can create a new account with it?

    I created an alias precisely because I wanted to make it the new default name and then quickly realized it wasn't possible. How long after deleting the alias will it become available again so that I can create a new account with it?
    I'm trying to make iCloud mail my primary email but I'm concerned that I may have lost the perfect email address forever.

    I have the same problem. After our wedding I've created an alias ([email protected]) to my actual AppleID Account ([email protected]). Now I'd the idea to delete the alias and my actual AppleID to create a new AppleID with ([email protected]).
    Is there really no possibilty to do this?
    Thanks in advance for quick and positive feedback.

  • Need to authorise new laptop after old one crashed.  Have 5 computers already authorised and cannot wait until July for 12 month "Deauthorise all computers" to become available again.  How can I authorise this new laptop?

    Hello... I need to authorise a new laptop after my old one completely died (before I could deauthorise it!!).  I have 5 computers already authorised and cannot wait until July for the 12 month "deauthorise all computers" option to become available again.  Does anyone know how can I authorise this new laptop as one of the 5, in place of the old one?  Any help gratefully received!

    Go to one of the authorized computers and de-authorize it individually.
    The one year limitation is ONLY for the de-authorize all option.

  • Can't move objects after Pasting inside?

    Using CS5.5,
    I made a series of shapes like the attached one, and then I select the outer square shape and I choose to edit>paste inside the shape. I then group all of the pieces making up the shapes and I want to move it to a lower portion of my document, though when I do this the image does not come along with the shape and text.
    What am I doing wrong? How should I be doing this?
    Thanks.

    Remember: The Layers panel is your friend! The Paste Inside command creates a mask, which is a special type of group. To move your image independently from its mask—in other words, to reposition it within the square—go to the Layers panel and click on the Link symbol between the thumbnails to unlink the two components. Then click on the image thumbnail to select the image, go to the canvas and start moving the image around (using the Pointer tool). After that, you'll probably want to relink the image and the mask—again, using the Layers panel—so they can be moved around the canvas as a unit.
    As I said, masks are just a special type of group. You can unmask an object at any time using the Modify > Ungroup command, which will restore the original components as separate, independent objects. You can then regroup those objects into a mask by selecting them and choosing Modify > Mask > Group as Mask. This is my preferred way to create a mask. It produces the same results as Paste Inside but doesn't require cutting an object beforehand; instead, you simply stack the objects, select them, and run the command, with the top object—e.g., the square—becoming the mask to the bottom object(s)—e.g., the image.
    If you have other, non-masked elements involved—like your gradient block with text—and you want to move them all as a unit, you have several options. One option is include all the elements in a single layer and use the Layers panel to select all the elements in that layer—by clicking on the layer folder/name. Another option would be to simply drag-select all the elements on the canvas before moving them. And a third option would be to group all the elements by selecting them and choosing Modify > Group. This last option makes it easy to move all the elements together on the canvas but makes it more awkward to edit the elements individually (which might require ungrouping using Modify > Ungroup), so it's probably not the best for you.
    Finally, since your gradient block with text appears to be contained within the square that you're using to mask the image, you could opt to include that gradient block as part of your mask group as well. To do this, you'd simply stack the image, the gradient block, the text, and then the square on top. Then select them all, and choose Modify > Mask > Group as Mask. The square would become the mask for all three of the selected objects beneath it.

  • Cisco ISE - Reauthentication of client if server becomes alive again

    Dears,
    I have this case where Cisco ISE server is used to authenticate & authorize clients on the network.
    I configured the switch port to authorize the client in case the ISE server is dead (or not reachable).
    The thing is that I want to reauthenticate the client once the ISE server becomes alive again but I am not able to.. ("Additional Information is needed to connect to this network" bullet is not appearing and the client PC remains authenticated and assigned to the VLAN.
    Below is the switch port configuration:
    interface FastEthernet0/5
    switchport access vlan 240
    switchport mode access
    switchport voice vlan 156
    authentication event server dead action authorize vlan 240
    authentication event server alive action reinitialize
    authentication host-mode multi-domain
    authentication order dot1x mab
    authentication priority mab
    authentication port-control auto
    mab
    dot1x pae authenticator
    spanning-tree portfast
    Anyone can help?
    Regards,

    Please check whether the switch is dropping the connection or the server.
    Symptoms or Issue
     802.1X and MAB authentication and authorization are successful, but the switch is dropping active sessions and the epm session summary command does not display any active sessions.
    Conditions
     This applies to user sessions that have logged in successfully and are then being terminated by the switch.
    Possible Causes
     •The preauthentication ACL (and the subsequent DACL enforcement from Cisco ISE) on the NAD may not be configured correctly for that session.  
    •The preauthentication ACL is configured and the DACL is downloaded from Cisco ISE, but the switch brings the session down.  
    •Cisco ISE may be enforcing a preposture VLAN assignment rather than the (correct) postposture VLAN, which can also bring down the session.
    Resolution
     •Ensure the Cisco IOS release on the switch is equal to or more recent than Cisco IOS Release 12.2.(53)SE.  
    •Check to see whether or not the DACL name in Cisco ISE contains a blank space (possibly around or near a hyphen "-"). There should be no space in the DACL name. Then ensure that the DACL syntax is correct and that it contains no extra spaces.  
    •Ensure that the following configuration exists on the switch to interpret the DACL properly (if not enabled, the switch may terminate the session):  
    radius-server attribute 6 on-for-login-auth
    radius-server attribute 8 include-in-access-req
    radius-server attribute 25 access-request include
    radius-server vsa send accounting
    radius-server vsa send authentication

  • Problem: Objects become invalid so easily

    Hi All,
    We are running Oracle 9i Standard Edition, which was downgraded from the Enterprise Edition, because they want to save $50K/year.
    I have noticed even in the enterprise edition that some objects (sprocs, functions, triggers, packages) could become invalid for no reason (no schema changes and no changes in some sprocs/functions called by some others). I have googled this problem and found a few tips on the the internet and at least one seasoned DBA said Oracle objects can become invalid for no obvious reasons. After the downgrade, things got worse. The DBA runs a script to compile all packages, sprocs, functions, triggers once every hour. Then things got even worse. But I think the DBA script did not run more than once in a row to resolve some dependency issues. So now the DBA runs his script every two minutes. The problem is gone, but is there any better way to do this? Or should it happen in the first place? I figure that if Oracle runs like this, it should be out of business soon, because the MS SQL guys say they never have to explicitly re-compile invalid obejcts. At first the DBA thought that when PowerBuilder calls the sprocs, the sprocs do not re-compile because Sybase does not know how to program against Oracle. Then one day I was using SQL*Plus to run the sprocs and got the explicit error message for invalid objects and then the DBA was convinced otherwise.
    Thanks.
    Ben

    Thanks a lot. Yes you are right. The re-complie did cause other objects to be invalid. that's why I asked to dba to run his script more than once in a row. Now the problem seems to be gone. But here is what I found at http://www.dbazine.com/oracle/or-articles/hordila2. It is true when a package or sproc becomes invalid, they often times do not auto re-compile. See his comments on that.
    Application Malfunctions and Data InconsistenciesPart of maintaining quick response times for the database is making sure that as many objects as possible have a valid status. At least frequently used objects should not be invalid. Some objects (views, triggers, procedures, functions, packages, package bodies) can become invalid under certain circumstances: after massive data loads, imports, batches, even without explicit schema changes, after schema restructuring (drop, re-name, alter of objects). Very often, developers leave behind on purpose lots of invalid objects, to serve as a library of source code for future needs, or as a source code backup for the production objects. Some of these events are thought of as normal, or maybe bad style, while others are treated as bugs.
    Anyway, if this happens, applications may stop working at all or may start working slower, incorrectly or incompletely. Mal-functioning triggers calling invalid procedures, etc., for example, can lead to data inconsistencies, missed data propagation, etc. In a complex system, this is a serious situation and may go undetected for some length of time.
    Failed RecompilingFor some objects (views, triggers), the Oracle system may attempt automatically to recompile and validate them at the first run. This will slow the first runs of the application, but the system will function correctly, and be faster on the next runs. For stored programs, most of the time, this auto-recompile does not happen. The DBA needs to detect and recompile them as soon as possible.
    Some objects need to be re-developed/edited for references to be successfully recompiled and to become valid again. And other objects may
    Ben

  • Can't move objects with Selection Tool

    So, I just installed Illustrator CC, which I now have on a trial license.  About an hour ago, illustrator suddenly started refusing to move any objects while I'm in the Selection Tool.  I can move the objects only in Free Transform.  I use hot keys a lot, so it's really slowing me down.  I hit "V" to click on and then move an object, and then it won't move. I get the error sound, but no dialogue box pops up to explain what the error is. 
    Since I'm getting ready to bite the bullet and start paying a hefty monthly fee for this program when my trial runs out, this is pretty aggravating.  Anyone have any ideas what might have cause this?

    Charlie,
    The following is a general list of things to try in case of serious strangenesses.
    You may try the following (you may have tried/done some of them already) and see whether it helps (the following is a general list of things you may try when the issue is not in a specific file; 3) and 4) are specifically aimed at possibly corrupt preferences):
    1) Close down Illy and open again;
    2) Restart the computer (you may do that up to 3 times);
    3) Close down Illy and press Ctrl+Alt+Shift/Cmd+Option+Shift during startup (easy but irreversible);
    4) Move the folder with Illy closed (more tedious but also more thorough and reversible);
    See posts #3 to 7 in this thread about locating the folder in CC,
    http://forums.adobe.com/thread/1297845?tstart=0
    5) Look through and try out the relevant among the Other options (Item 7) is a list of usual suspects among other applications that may disturb and confuse Illy);
    Even more seriously, you may:
    6) Uninstall, run the Cleaner Tool, and reinstall.
    http://www.adobe.com/support/contact/cscleanertool.html

  • ActiveX Component Can't Create Object

    Hi Frds,
    Getting this error when making a chances in change query global defination Error : Runtime Error '457': This key is Already is already assosiated with an element of this collection..When i was clik on then again i m getting message like Runtime Error ''429': ActiveX Component Can't Create Object.
    What is the excat prblem can any one let me know...
    Thanks,
    ALi

    Hi,
    For Runtime Error '457'-Pls Check SAP Note - 517232
    ForRuntime Error '429' You can refer SAP Note: 542933
    Pls chk this link also;
    https://websmp207.sap-ag.de/~form/handler?_APP=01100107900000000342&_EVENT=REDIR&_NNUM=542933&_NLANG=E
    Hope this helps
    Regards
    CSM Reddy

  • How long for in-app purchases to become active again after submitting an expired paid contract?

    We let our paid contract expire and therefore all active in-app purchases stopped working.  I just filled it out and it is now in-effect, but does anyone know roughly how long before these in-app purchases will become active again?

    Hi ,
    I'm very sorry to hear of the problems you have had moving to pay as you go.
    Please can you give customer service a call and ask to speak to the pay monthly retentions team who will be able to fix this issue for you.
    Click here for contact details.
    Thanks
    James

  • ERROR: Automation server can't create object

    Hi,
    I am at my wits end, and I hope you can help me. I have
    compiled a Webhelp project that runs just fine in Firefox (with the
    exception of expanding text but blah blah blah... :P)
    When I compile the same project in IE, I get an page loading
    error that tells me that "Automation server can't create object"
    (with reference to 'whskin_pdfhtml.html' in a file path, and my ToC
    is not visible.
    My tester, who is on another machine in another location,
    tells me HIS ToC loads fine, but he gets an out of memory error at
    line 59.
    I have trawled thru these forums for an hour now, and I am no
    closer to solving this problem. I have tried creating a brand new
    empty project with one topic and I get the same error.
    Any ideas on what's happening?
    Of course, we have a demo tomorrow at 6am.
    thanks

    Guessing here.
    1] You have created webhelp pro when you don't have RoboHelp
    Server installed on the server.
    2] Your source has some output files in it. The topic
    concerned being the one that gives the memory error. This result is
    what you get when you view in RoboHelp an output file that has been
    imported into the source. I don't know whether it gives the same
    error in the output again.
    Or are you viewing the help locally instead of from a server?
    What version of IE.

  • Problems with "Read" mail becoming "Unread" again

    Now that I have upgraded to Mountain Lion, I find my mail app acting odd. When I read an email, or when I select the entire contents of a folder and mark all the mail as "read", within a few minutes, random emails become "unread" again.
    Anyone else experiencing this and have you come up with any fixes?
    Thanks
    Gary Cascio

    Mail 2.x has always had these kind of problems with some IMAP servers. A few weeks before releasing the Mac OS X 10.4.7 Update, Apple made some changes to .Mac that caused these issues to happen there as well, and these forums were flooded with complaints from .Mac users about read messages being marked unread, and deleted messages being undeleted.
    If this was a non-Mac IMAP account, I would say there is nothing you can do about it other than switching to another mail client. But in you case there has to be something else going on.
    Try rebuilding the mailbox, i.e. select it and do Mailbox > Rebuild and see whether that makes a difference.

  • How can I see my external drive again after installing mavericks?

    Hi,
    I just upgraded my Mac Book Air to Mavericks and I cannot see my external hard drives any more. The data is still there and can be read on other computers. Regular USB keys are also detected.
    What should be done so that the external hard drive become "visible" again with Mavericks?
    Thank you very much and regards,

    Hi Niel,
    Unfortunately, the box was already checked. I tried to "uncheck" and "check it again", but it still does not work.
    What else can be done?
    Thank you very much and regards,

  • FAILURE (Err):429: CreateObject(Microsoft.BDD.Utility) - ActiveX component can't create object

    working with MDT 2013 & ADK 8.1,
    Windows 8.1 x64 deployment fails in section "State Restore" (Deployment Type: NEWCOMPUTER).
    RUN: regsvr32.exe /s "C:\Users\ADMINI~1\AppData\Local\Temp\Tools\x64\Micrsoft.BDD.Utility.dll"
    "FAILURE (Err):429: CreateObject(Microsoft.BDD.Utility) - ActiveX component can't create object"
    go to "%programdata%\microsoft\windows\start menu\programs\startup" and perform the "Litetouch.lnk" with elevated rights (right click run as administrator), the ts will continue and apply the OS without any error message.
    join to workgroup instead to domain and the installation will perform without any error...
    any help is appreciated.
    thx a lot.
    The error was AD policy related.
    I moved the device to an AD Folder (no policy), deployed the windoows 8 again and moved the box back to the correct ou in TS section PostInstall - Custom Tasks using a ps script.
    I did not figure out which policy.
    Update: moved from W8.1 EVALUATION to offical release solved my problem!

    Which policies are causing this? Do you have anything that limits/modifies the local administrator account? Or restricts the loading of ActiveX?
    Keith Garner - keithga.wordpress.com

Maybe you are looking for

  • Windows Firewall Service Crashes on Windows Server 2012

    Hello Team, I am facing issues with Windows Firewall Service in new Windows 2012 R2 deployments. when i try to start the Firewall service it wont start and it throws an error message to check the system event logs for information The Windows Firewall

  • Contract Target Value to PO

    Dear All, I am having a Service PR with value 2,695,929.00 USD, also one contract with Target Value 7000000 SAR, but in the service specification of contract, value is 5.00 SAR. Now I had created release order with ref to both PR and Contract, and PO

  • How do I fix my mac so that the window I am looking at has the focus?

    I am a new mac user and at present beyond comprehension of how people cope with mac if they are not primarily mouse oriented. Current problem. I close an app using apple key W It closes I am looking at a window of another app. I want to close that to

  • Adobe Reader 9/Mac OSX 10.5.4/Internal Error after installing

    Just purchased a new iMac with OSX 10.5.4 installed. I have 2.4 GHz Intel Core 2 Duo with 4 GB 667 MHz DDR2 SDRAM. Acrobat Reader v8.x won't run, so downloaded and installed v9 from the official Adobe web site. When I attempt to launch Acrobat Reader

  • Preview panel not working

    Can't view video in preview panel in Premiere Elements 9