Getting cannot find Symbol in Java project in Intellij

Question

I make this call to a static singleton instance from the class GameManager java   HUD getInstance   update timeDelta     HUD java contains the HUD class as well as two other related classes  HUDTextElement and HUDElement  All the classes are in the same root path    src org mypackage   However  when compiling this java project in IntelliJ I get cannot find Symbol HUD on the line I make the HUD getInstance   call   This exact same code compiles just fine in eclipse  any idea what the problem is

User · Answer

I had the same problem and fixed it by clicking File Invalidate caches  restart

User · Answer

For my case  the issue was with using Lombok s experimental feature  UtilityClass in my java project in Intellij Idea  to annotate a class methods as  static   When I explicitly made each method of the class as  static  instead of using the annotation  all the compilation issues disappeared

User · Answer

If you are using Lombok  make sure you have enabled annotation processing

User · Answer

Make sure the source file of the java class you are trying to refer to has a  java extension  It was  aj in my case  I must have hit  Create aspect  instead of  Create class  when creating it   IntelliJ shows the same icon for this file as for  normal  class  but compiler does not see it when building   Changing  aj to  java fixed it in my case

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I m seeing a lot of answers proposing a build or a re-build but just in case this don t fix your problem just notice that IDEA can detect a method but it will not compile in case you have a new before as it will be expecting the instance

User · Answer

I use maven in my project  For some reason IntelliJ was giving me these kind of wierd errors  I ran mvn clean and tried a resync and these errors disappeared

User · Answer

This is likely to be  your    src folder is not marked as a  source  folder in Intellij IDEA  so it doesn t know to look there to find your class  You can right click the folder in the project explorer and choose  mark as source folder  to fix this

User · Answer

I was having the same problem except that I was importing the classes for which dependencies were not resolving somehow  I refreshed maven projects  Rebuild Project  It still did not resolve  Looks like IntelliJ was caching something incorrectly  I restarted IntelliJ and that resolved the dependencies  I guess it cleared the cache somehow

User · Answer

This happened to me when I deleted a folder and then copy-pasted it back to the project   Right-click project folder - gt  Rebuild worked for me

User · Answer

Since this is the first hit on Google searching for  intelliJ cannot find symbol  error  I m gonna throw in my solution as well    The problem for me was that my project originated from Eclipse  and some files contained dependency on classes that were generated in src generated-sources by specifications in pom xml  For some reason  this was not properly executed when I first opened the project and rebuilding re-importing did not help  so the files were never generated    The solution was to right-click on the module  and select Maven - gt  Generate Sources and Update Folders That solved the issue and I could compile

User · Answer

I know this is old  but for anyone else  make sure that the class that s missing is in the same package as the class where you get the error where your calling it from

User · Answer

I know this is an old question  but as per my recent experience  this happens because the build resources are either deleted or Idea cannot recognize them as the source   Wherever the error appears  provide sources for the folder directory and this error must be resolved   Sometimes even when we assign sources for the whole folder  individual classes might still be unavailable  For novice users simple solution is to import a fresh copy and build the application again to be good to go   It is advisable to do a clean install after this

User · Answer

For me was a problem with Lombok  because it requires Annotation Processing to be enabled  You can find this checkbox on Settings  gt  Build  gt  Compiler  gt  Annotation Processors

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Thanks for the help so far  turns out the fix was to compile HUD java first  right click on the file-  Compile HUD java   After compiling the java file the rest of the project could be  compiled without any problems   I don t really know why this fixed it  or why IntelliJ wouldn t do this automatically  but root error seems it has to do with IntelliJ not correctly handling having multiple classes in a single  java file

User · Answer

recompiling the main Application java class did it for me  right click on class   Recompile

User · Answer

Sometimes the class you want is in the test source directory  Happened to me  anyway

User · Answer

I was getting the same  cannot find symbol  error when I did Build - gt  Make Project  I fixed this by deleting my Maven  target folder  right clicking my project module and doing Maven - gt  Reimport  and doing Build - gt  Rebuild Project  This was on IntelliJ Idea 13 1 5   It turns out the Maven - gt  Reimport was key  since the problem resurfaced a few times before I finally did that

User · Answer

I had to right-click the project  and select  Reimport  under the  Run Maven  submenu

User · Answer

I know this thread is old but  another solution was to run    mvn clean install -Dmaven test skip true   And on IntelliJ do CMD   Shift   A  mac os  -  type  Reimport all Maven projects    If that doesn t work  try forcing maven dependencies to be re-downloaded    mvn clean -U install -Dmaven test skip true

User · Answer

I had the same problem  and turns out I had never completely compiled the fresh project  So right-clicking and selecting Compile    shift-cmd-F9 on mac  fixed it  It seems the compile on save does not  see  non-compiled files   Marking the src folder as source did not help in my case

User · Answer

This works for me  say class A depends on class B and class c  d etc  but the error throws on class A which does not have any errors  So I try to compile class A alone first - gt it shows error on the package of class B  So tried to compile whole package of class B  Now it throws which is the exact error class on my case class B had error   Usually Intellj shows the exact error class with line number when compile build  On some occasions it throws error in wrong place class  Have a try

User · Answer

Select Build- Rebuild Project will solve it

User · Answer

For me - I tried these steps Invalidate Cache  amp  Restart  Maven Reimport   but they didn t work  So I deleted the  idea   settings  and  project folder and tried - it worked

User · Answer

I faced the same problem  and there are a lot of solutions given in the answer  trying all these solutions took me quite some time  so here I would like to propose a methodical approach if you get this error  Check for the following things  create update if something is missing  src folder is marked as the source folder  imls files are present Annotation processing is enabled If you recently used  UtilityClass then it can also be the reason  Bug Link  If everything is fine  you can try following solutions in given order  Recompile the file module  If that didn t fix the issue  try refreshing maven dependency and building the project using Maven - gt  Reimport and Build - gt  Rebuild Project  Try mvn clean install -DskipTests  Try invalidating the IntelliJ cache and restarting the IDE  using File  gt  Invalidate caches  restart  Delete the  idea folder and reimport the project   Credit and Thanks to everyone who answered this question  you can refer to their answers for more description regarding each point

User · Answer

In my case  I had a problem with finding a class from another module  In pom xml  I just had this dependency with  lt scope gt compile lt  scope gt  specified  Removing this line helped

[java] Getting "cannot find Symbol" in Java project in Intellij

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