Create: Calculator.java, Education.java, Main.java, OnTaskDoneListener.java, Person.java, README (task 1).md, README (task 2).md, Sex.java, Worker.java

Update: README.md

Create: Main.java, Schema.java, Converter.java, Update: README.md

Create: Main.java

Update: README.md

Create: Main.java, Address.java, Update: README.md

Create: Main.java, Task.java

Create: Main.java, PasswordChecker.java

Create: Account.java, CreditAccount.java, Main.java, SimpleAccount.java, Logger.java, Main.java, SimpleLogger.java, SmartLogger.java