File list (Check if you may need any files):
lecture4
........\Address.java
__MACOSX
........\lecture4
........\........\._Address.java
lecture4\AddressTester.java
__MACOSX\lecture4\._AddressTester.java
lecture4\Apple.java
__MACOSX\lecture4\._Apple.java
lecture4\AppleTester.java
__MACOSX\lecture4\._AppleTester.java
lecture4\AreaTester.java
__MACOSX\lecture4\._AreaTester.java
lecture4\BankAccount.java
__MACOSX\lecture4\._BankAccount.java
lecture4\BankAccount2.java
__MACOSX\lecture4\._BankAccount2.java
lecture4\Circle.java
__MACOSX\lecture4\._Circle.java
lecture4\Circle1.java
__MACOSX\lecture4\._Circle1.java
lecture4\CircumferenceTester.java
__MACOSX\lecture4\._CircumferenceTester.java
lecture4\ClassTest.java
__MACOSX\lecture4\._ClassTest.java
lecture4\Converter.java
__MACOSX\lecture4\._Converter.java
lecture4\ConverterTester.java
__MACOSX\lecture4\._ConverterTester.java
lecture4\EnlargeTester.java
__MACOSX\lecture4\._EnlargeTester.java
lecture4\FitsInsideTester.java
__MACOSX\lecture4\._FitsInsideTester.java
lecture4\Person.java
__MACOSX\lecture4\._Person.java
lecture4\Puzzle.java
__MACOSX\lecture4\._Puzzle.java
lecture4\PuzzleTest.java
__MACOSX\lecture4\._PuzzleTest.java
lecture4\Rectangle.java
__MACOSX\lecture4\._Rectangle.java
lecture4\Rectangle1.java
__MACOSX\lecture4\._Rectangle1.java
lecture4\ShapeTester.java
__MACOSX\lecture4\._ShapeTester.java
lecture4\StaticTester.java
__MACOSX\lecture4\._StaticTester.java
lecture4\StaticVariable.java
__MACOSX\lecture4\._StaticVariable.java