java - Concatenate multiple commands -

how can manipulate regular expression

string onecmd = "([0-9]+\\.[tcm]{1}\\#.+\\#[wsn]{1})";

to avoid matching

"100.m#testvalue#w100.m#testvalue#w"

but allow matching

100.m#testvalue#w

? because in end want there can multiple commands separated |

string regex = "^(" + onecmd + "$|" + onecmd + "\\|{1}" + onecmd + "$)";

so valid commands are:

cmd cmd|cmd1|cmd2|... not ending '|' !!

but first problem if concatenate 2 or more commands still valid.

i think readable way first split on | , apply regex allows 1 match:

^[0-9]+\\.[tcm]#[^#]*#[wsn]$

if want find matches separated | and/or start/end of string, can positive lookahead assertions instead of ^ , $ anchors:

(?<=^|\\|)[0-9]+\\.[tcm]#[^#]*#[wsn](?=$|\\|)

UIO