Why I got cannot be resolved to a type error

Question

I am developing a dynamic web project  RESTful jersey  under Eclipse IDE   Under src my demo service folder I have CarService java class  public class CarService             Under src my demo controller folder I have UserController java class  import my demo service CarService   public class UserController      private CarService carService    ERROR  CarServcie cannot be resolved to a type      I do have imported the CarService  why eclipse give me the error  CarServcie cannot be resolved to a type  in my UserController java   --------Edit------------------  I found the cause  for some reason  my demo service has the same level as src  in eclise project explorer view  After I move my demo service under src   it is fine  Seems I should not create new package in  Project Explorer  view in Eclipse      But thank you for your response

User · Answer

You probably missed package declaration  package my demo service  public class CarService

User · Answer

for some reason  my demo service has the same level as src  in eclise project explorer view  After I move my demo service under src   it is fine  Seems I should not create new package in  Project Explorer  view in Eclipse     But thank you for your response

User · Answer

Maybe wrong path    Check your  classpath file

User · Answer

I had wrong package names   main java hello and main test hello rather than com blabla hello     I renamed my src-folder to src main java and created another src-folder src test java  I renamed my package within src main java to com blabla hello I created another package with the same name in src test java

User · Answer

I had my own instance of this error  and in my case none of the above solutions resolved the  cannot be resolved to a type  error by themselves  although they were necessary steps toward doing so  I found something silly that did though   This seemed to be due a bug in Eclipse  Luna Service Release 1a  4 4 1  in my case   In the file where you re seeing the error  try saving after making and then undoing a trivial change  e g  deleting one character and then typing it back in   For some reason this caused all my class references to resolve

User · Answer

I had this problem while the other class  CarService  was still empty  no methods  nothing  When it had methods and variables  the error was gone

User · Answer

In my case the missing type was referencing an import for java class in a dependent jar   For some reason my project file was missing the javabuilder and therefore couldnt resolve the path to the import   Why it was missing in the first place I don t know  but adding these lines in fixed the error    lt buildCommand gt           lt name gt org eclipse jdt core javabuilder lt  name gt           lt arguments gt           lt  arguments gt   lt  buildCommand gt

User · Answer

u just need go to Project ---  clean See http   philip yurchuk com 2008 12 03 eclipse-cannot-be-resolved-to-a-type-error

[java] Why I got " cannot be resolved to a type" error?

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