What is the correct regex for pattern?

Question

Java

Friends, I ask for your help. I am writing a program that generates a to-do list through the console using commands.

I need to teach the program to respond differently to two input patterns:
First: "ADD + Text" (where "ADD" is the name of the command, "Text" is the text). For example: ADD Case 4
Second: "ADD + # + Text" (where "ADD" is the name of the team, "#" is the sequence number to be assigned to the case, "Text" is the text). For example: ADD 4 Thing 4

Separating these patterns I plan to implement this with Pattern - Matcher. But it is not possible to correctly set the condition for Patterna.

Now I use the following regular expressions:
For the first one: Pattern patternAdd = Pattern.compile("
For the second one: Pattern patternAddX = Pattern.compile("ADD + \\s[0-9] + [a-zA-Z0-9]");

Including tried their various variations, but to no avail ... Can you tell me how to write regex correctly? Thanks in advance!

Answer 1

Try this:
Variant strings:
$a="ADD sfdsf"
or
$a="ADD 123 sfdsf"
Regular (perl):
if($a =~ /ADD\s+(\d)+[^\d].+ /)
or like this:
if($a =~ /ADD\s+[\d]+[^\d].+/)
check only one regular expression, it will return false on the first line and true on the second.