This is based on video number 15. I am getting the following errors (4 total):

Error:(27, 18) error: cannot find symbol method setID(int)
Error:(28, 18) error: cannot find symbol method setID(int)
Error:(46, 64) error: cannot find symbol method getID()
Error:Execution failed for task ':app:compileDebugJavaWithJavac'.

> Compilation failed; see the compiler error output for details.

I noticed also, that in the video Bucky's  "setID"s were underlined red, yet his program ran successfully. How do I fix these errors?