The JLS 20.16.3 requires that the command line parsing use StringTokenizer(cmd)
in the Runtime.exec(String command). The actual behavior is not acceptable. For example, the command line

vi "a"

(6 characters total). All shells(on both unix and win32) will let the child
process get two argumenets (vi and a), the quote(") must be stripped. However
the Java will pass them as (vi and "a"), the quotes have not been stripped.

The following command will get even weird result.

ls "Program Files"

The Java command parser will get 3 arguement as

ls
"Program
Files"