File list (Check if you may need any files):
ch_12
.....\.classpath
.....\.project
.....\bin
.....\...\LoginFrame.java.bak
.....\...\login_en.properties
.....\...\login_zh.properties
.....\...\test0
.....\...\.....\JavaQuestion.class
.....\...\.....\MyResources_en.class
.....\...\.....\MyResources_zh.class
.....\...\test1
.....\...\.....\LoginFrame.class
.....\...\.....\LoginFrame_cancelButton_actionAdapter.class
.....\...\.....\LoginFrame_jButton2_actionAdapter.class
.....\...\.....\LoginFrame_loginButton_actionAdapter.class
.....\...\.....\LoginFrame_registButton_actionAdapter.class
.....\...\.....\LoginFrame_userNameField_actionAdapter.class
.....\...\.....\ShopApp$1.class
.....\...\.....\ShopApp.class
.....\...\.....\Tool.class
.....\src
.....\...\login_en.properties
.....\...\login_zh.properties
.....\...\test0
.....\...\.....\JavaQuestion.java
.....\...\.....\MyResources_en.java
.....\...\.....\MyResources_zh.java
.....\...\test1
.....\...\.....\LoginFrame.java
.....\...\.....\ShopApp.java
.....\...\.....\Tool.java