All java applications must have a method

All java applications must have a method public static void main(String[] args).
where public is the access specifier which allows the main method to be accessble everywhere.
statis helps main method to get loaded without getting allied by any instance/object.
 void clarifies that the main method will not return any value.
main is the name of the method.
String[] args- defines the String array to pass arguments at command line. args is the variable name of the String array.

In windows explorer, select the file, folder, or groups of files and folders you'd like to copy. you can select multiple files or folders in several ways: click the first file or folder you want to select, hold down the ctrl key, and then click each additional file or folder you want.