Java   Personal Library

About the Personal Library category (2)
1 Error on line 12(CodeAcademy Learn Java, personal library) (3)
Java simple CRUD (2)
Dont understand Output. Could someone explain? (3)
Simple username/password validation problem (10)
Output is true? (5)
Need help, library (6)
1 Error on line 13(CodeAcademy Learn Java, personal library) (3)
Variable Error on getFinishedBooks method (2)
Not sure where I went wrong: "Cannot find symbol" and "missing Method body" (8)
Hi I need some help compiling this program (10)
Personal Library complete code with the UnFinished books addition (4)
Question about .get method (4)
Personal Library Project Java (2)
Project: Personal Library (5)