Description: Implements a file copy function, interface, users can choose to copy the source directory and destination directory
To Search:
File list (Check if you may need any files):
Copier\.classpath
......\.project
......\.settings\org.eclipse.jdt.core.prefs
......\bin\Copier.class
......\src\Copier.java
......\.settings
......\bin
......\src
Copier