CS110

Lecture 15

class BankAccount

•What all BankAccounts share

–fields balance, transactionCount, issuingBank

–methods withdraw, deposit, incrementBalance, countTransaction, getters and setters for fields

•Changes from BankAccount.java (4):

–abstract class (16): never new BankAccount()

–protected constructor (33): invoked by children only

–abstract method newMonth: (185) what each kind of BankAccount does on first day of month, implemented in each child class, called from Bank’s report and newMonth methods