A DESCRIPTION OF THE PROBLEM :
"The view and parent view and checked to see if they ..."
Should be "The view and parent view are checked ..."

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The view and parent view are checked to see if they
ACTUAL -
The view and parent view and checked to see if they

URL OF FAULTY DOCUMENTATION :
https://docs.oracle.com/javase/8/docs/api/javax/swing/JViewport.html