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

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.

<buildCommand>
        <name>org.eclipse.jdt.core.javabuilder</name>
        <arguments>
        </arguments>
</buildCommand>

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

Maybe wrong path    Check your  classpath file

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

User · Answer

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

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 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

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

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

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