File list (Check if you may need any files):
petsystem\.classpath
petsystem\.project
petsystem\.settings\org.eclipse.jdt.core.prefs
petsystem\bin\cn\net\db\DBHelp.class
petsystem\bin\cn\net\entity\Count.class
petsystem\bin\cn\net\entity\Pet2.class
petsystem\bin\cn\net\entity\PetOwner.class
petsystem\bin\cn\net\entity\PetStore.class
petsystem\bin\cn\net\idaocount\CountImple.class
petsystem\bin\cn\net\idaocount\ICount.class
petsystem\bin\cn\net\idaopet2\IPet2.class
petsystem\bin\cn\net\idaopet2\Pet2Imple.class
petsystem\bin\cn\net\idaopetowner\IPetOwner.class
petsystem\bin\cn\net\idaopetowner\PetOwnerImple.class
petsystem\bin\cn\net\ipetstore\IPetStore.class
petsystem\bin\cn\net\ipetstore\PetStoreImple.class
petsystem\bin\cn\net\menue\Menu.class
petsystem\src\cn\net\db\DBHelp.java
petsystem\src\cn\net\entity\Count.java
petsystem\src\cn\net\entity\Pet2.java
petsystem\src\cn\net\entity\PetOwner.java
petsystem\src\cn\net\entity\PetStore.java
petsystem\src\cn\net\idaocount\CountImple.java
petsystem\src\cn\net\idaocount\ICount.java
petsystem\src\cn\net\idaopet2\IPet2.java
petsystem\src\cn\net\idaopet2\Pet2Imple.java
petsystem\src\cn\net\idaopetowner\IPetOwner.java
petsystem\src\cn\net\idaopetowner\PetOwnerImple.java
petsystem\src\cn\net\ipetstore\IPetStore.java
petsystem\src\cn\net\ipetstore\PetStoreImple.java
petsystem\src\cn\net\menue\Menu.java
petsystem\bin\cn\net\db
petsystem\bin\cn\net\entity
petsystem\bin\cn\net\idaocount
petsystem\bin\cn\net\idaopet2
petsystem\bin\cn\net\idaopetowner
petsystem\bin\cn\net\ipetstore
petsystem\bin\cn\net\menue
petsystem\src\cn\net\db
petsystem\src\cn\net\entity
petsystem\src\cn\net\idaocount
petsystem\src\cn\net\idaopet2
petsystem\src\cn\net\idaopetowner
petsystem\src\cn\net\ipetstore
petsystem\src\cn\net\menue
petsystem\bin\cn\net
petsystem\src\cn\net
petsystem\bin\cn
petsystem\src\cn
petsystem\.settings
petsystem\bin
petsystem\src
petsystem