Create: new_file

Update: Main.java

Update: Main.java

Create: Main.java, Adress.java

update: Main.java

create: Main.java

create: Main.java, PasswordChecker.java

create: Account.java, CreditAccount.java, SimpleAccount.java

create: Main.java, Sale.java, Deal.java, Expenditure.java, TaxSystem.java, usnDebit.java, usnDiffDebitCredit.java, Company.java