File list (Check if you may need any files):
javatest\.classpath
........\.project
........\.settings\org.eclipse.jdt.core.prefs
........\bin\javatest\CalculatorCore$1.class
........\...\........\CalculatorCore$10.class
........\...\........\CalculatorCore$11.class
........\...\........\CalculatorCore$2.class
........\...\........\CalculatorCore$3.class
........\...\........\CalculatorCore$4.class
........\...\........\CalculatorCore$5.class
........\...\........\CalculatorCore$6.class
........\...\........\CalculatorCore$7.class
........\...\........\CalculatorCore$8.class
........\...\........\CalculatorCore$9.class
........\...\........\CalculatorCore$Operator.class
........\...\........\CalculatorCore$Processor.class
........\...\........\CalculatorCore.class
........\...\........\Javatest.class
........\...\........\MenuTester$1.class
........\...\........\MenuTester.class
........\...\........\MyCalculator$1.class
........\...\........\MyCalculator.class
........\...\........\Notepad$1.class
........\...\........\Notepad.class
........\...\........\SwingTest.class
........\...\sys\Computer.class
........\...\...\ControlSys.class
........\...\...\Door.class
........\...\...\InputEquip.class
........\...\test\TestDemo.class
........\...\user\Administrator.class
........\...\....\Employees.class
........\...\....\Visitors.class
........\...\validate\ChestCard.class
........\...\........\DefaultImp.class
........\...\........\Fingerprint.class
........\...\........\IValidate.class
........\...\........\Password.class
........\src\javatest\Javatest.java
........\...\........\MenuTester.java
........\...\........\MyCalculator.java
........\...\........\Notepad.java
........\...\........\SwingTest.java
........\...\sys\Computer.java
........\...\...\ControlSys.java
........\...\...\Door.java
........\...\...\InputEquip.java
........\...\test\TestDemo.java
........\...\user\Administrator.java
........\...\....\Employees.java
........\...\....\Visitors.java
........\...\validate\ChestCard.java
........\...\........\DefaultImp.java
........\...\........\Fingerprint.java
........\...\........\IValidate.java
........\...\........\Password.java
........\bin\javatest
........\...\sys
........\...\test
........\...\user
........\...\validate
........\src\javatest
........\...\sys
........\...\test
........\...\user
........\...\validate
........\.settings
........\bin
........\src
javatest