How to clear the cache in NetBeans

Question

I created a project in NetBeans  and I would like to clear the NetBeans cache   I m running NetBeans 7 0 1 on a Windows 7 machine   How do I do this

User · Answer

The NetBeans cachedir is a directory consisting of files that may become large, may change frequently, and can be deleted and recreated at any time. For example, the results of the Java classpath scan reside in the cachedir.

NetBeans 7.1 and older By default the userdir is inside a (hidden) directory called .netbeans stored in the user's home directory. The home directory is ${HOME} on Unix-like systems, and %USERPROFILE% (usually set to C:\Documents and Settings\) on Windows. The cachedir can be found in var/cache subfolder of the userdir. As the name suggests, the userdir is unique per user. For each version of NetBeans installed, the userdir will be a unique subdirectory such as .netbeans/. To find out your exact userdir location, go to the IDE's main menu, and choose Help > About. (Mac: NetBeans > About NetBeans). NetBeans 7.1 allows to separate the cache directory using a switch --cachedir to a desired location.

Examples A Windows user jdoe running NetBeans 5.0 is likely to find his userdir under C:\Documents and Settings\jdoe.netbeans\5.0\ A Windows Vista user jdoe running NetBeans 5.0 is likely to find his userdir under C:\Users\jdoe.netbeans\5.0\ A Mac OS X user jdoe running NetBeans 5.0 is likely to find his userdir under /Users/jdoe/.netbeans/5.0/ (To open this folder in the Finder, choose Go > Go to Folder from the Finder menu, type /Users/jdoe/.netbeans/5.0/ into the box, and click Go.) A Linux user jdoe running NetBeans 5.0 is likely to find his userdir under /home/jdoe/.netbeans/5.0/

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See this documentation at the NetBeans site: NetBeans 7.2 and newer

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I ll just add that I have tried to resolve reference problems caused by a missing library in the cache  and deleting the cache was not enough to solve the problem   I closed NetBeans  7 2 1   deleted the cache  then reopened NetBeans  and it regenerated the cache  but the library was still missing  checked by looking in     Cache 7 2 1 index archives properties    To resolve the problem I had to close my open projects before closing NetBeans and deleting the cache

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tl dr You might not need to whack your entire NetBeans cache     My problem manifested as running a clean build didn t delete the previous build folder or testuserdir folder  while I was using NetBeans 8 0 2   The first time I had this problem  Ray Slater s answer above helped me immensely  I had two Project Groups  and had to close each project in both groups  close NetBeans  clear the cache  then add my projects back to my groups before it would work again    Later  this problem cropped up again with NetBeans 8 1  I closed NetBeans  and ran ant build clean at the command line  and it worked  When I reopened NetBeans  the problem was resolved  It occurs to me that NetBeans was keeping something open and just needed to be closed in order to delete the folders     Update I finally figured out what was going on  Somehow  my NetBeans  Module Suite Project   yellow orange puzzle pieces icon  had been closed and the  Module Project   purple puzzle piece icon  having the same exact name as the  Module Suite Project  was open  Building clean cleaned that particular Project  correctly  but did not clean the entire Suite    Now that I have the  Module Suite Project  opened correctly again  things work as expected  This explains why ant build clean worked  since it was done on the command line at the right level to clean the whole Suite   I suspect I didn t strictly need to clean out my NetBeans cache at all though perhaps doing so actually fixed the issue of why it was only showing the  Module Project  instead of the  Module Suite Project   thereby doing the right thing when I clicked build clean    If I had simply realized that the Suite was no longer open and only the Project was  I could have fixed it in three seconds

User · Answer

Close NetBeans before deleting the cache   NetBeans 7 2   Windows 7  Cache is located in C  Users  lt username gt  AppData Local NetBeans Cache    Clear the cache using the  USERPROFILE  Windows variable   del  s  q  USERPROFILE  AppData Local NetBeans Cache    If it is set  you can also use the environment variable  LOCALAPPDATA    del  s  q  LOCALAPPDATA  NetBeans Cache    NetBeans 7 2   Linux  Cache is at     cache netbeans   netbeans version  index   Mac OS X  Cache is at    Library Caches NetBeans   netbeans version    See also http   wiki netbeans org FaqWhatIsUserdir   Help Menu  On Windows  selecting the Help    About menu will display a dialog that contains the following text   Product Version  NetBeans IDE 8 0 2  Build 201411181905  Java  1 7 0 80  Java HotSpot TM  64-Bit Server VM 24 80-b11 Runtime  Java TM  SE Runtime Environment 1 7 0 80-b15 System  Windows 7 version 6 1 running on amd64  Cp1252  en CA  nb  User directory  C  Users Username AppData Roaming NetBeans 8 0 2 Cache directory  C  Users Username AppData Local NetBeans Cache 8 0 2   Regardless of operating system  the About dialog will contain the correct path to the cache directory

User · Answer

On a Mac with NetBeans 8 1    NetBeans   About Find  User Directory path in the About screen rm -fr 8 1 In your case the version could be different  remove the right version folder  Reopen NetBeans

User · Answer

Just install cache eraser plugin  it is compatible with nb6 9  7 0 7 1 7 2 and 7 3  To configure the plugin you have to provide the cache dir which is in netbean s about screen  Then with Tools- erase cache  you clear the netbeans cache  That is all  good luck   http   plugins netbeans org plugin 40014 cache-eraser

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Before 7 2  the cache is at C  Users username  netbeans 7 0 var cache  Deleting this directory should clear the cache for you

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For NetBeans 8  on Windows nbsp 10 there s a definitive bug with duplicate classes error which is being solved by cleaning the cache at  C  Users  lt user gt  AppData Local NetBeans Cache

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The path of the cache directory is listed in the About window  menu Help About    Close NetBeans  then delete  or rename  the directory  NetBeans will rebuild its cache when it starts up

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The cache is C  Users userName AppData Local NetBeans Cache   and then the version name of the folder will specify the correct cache   You can also do this  Close the IDE  Instead  of deleting files and risking everything  rename this cache folder  Now start the IDE  Once it starts  a new cache folder will be created since the folder is not found  Now you can delete the renamed folder safely

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For Netbeans 7 4 and above in Linux  the cache is  HOME  cache netbeans 7 4

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I have tried this UserName radhason C  Users radhason AppData Local NetBeans Cache  Press Ok button   then cache folder will be shown and delete this cache folder of netbeans

User · Answer

In Window 7 the cache is located at C  Users USERNAME AppData Local NetBeans Cache

[netbeans] How to clear the cache in NetBeans

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