Why the system says cannot find symbol of Calendar though I said import.java.util.Calendar at the beginning? /home/Book.java 2:27 Spaces: 4 (Auto) All changes saved Terminal 1 error [user@sahara ]\$ javac Book.java Book.java:46: error: cannot find symbol int currentYear = Canlendar.getInstance ()get( Calendar.YEAR) symbol: variable Canlendar location: class Book 1 error.