What is a regular expression for finding a string with pattern ALXXXXX in another string?

I want to search for a template string ALXXXXX inside another string.

For example, I want to find line AL00123 in the line Data Stage AL00123

I've tried the following in Java.

Pattern pattern = Pattern.compile("AL\\d\\d\\d\\d\\d");
Matcher matcher = pattern.matcher(searchString);
boolean matches = matcher.matches();

this always returns false. What's wrong with my code?

I want to achieve the following

Determine if the search string contains ALXXXXX.
Get ALXXXXX value.
I want to do this in Java.

Listed below are the different ways to use ALXXXXX in any of the following ways:

Data Stage_AL00123
Data Step AL00123
Data Stage (AL00123)
Data Stage (_AL00123)
Data StageAL00123

Finally

The line always starts with AL
The string will always contain 5 digits after AL

+3

java string regex

Ajay 07 jul. 15 at 16:08

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2 answers

Usage Matcher#matches

matches the regex pattern against the entire input string. You want to use instead find

.

You can also reduce the regex to AL\\d{5}

.

+4

manouti 07 jul. 15 at 16:10

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You are using Matcher.matches()

that only returns true

if the string matches the pattern exactly. For your purpose, you want to useMatcher.find()

+4

Dragondraikk 07 jul. 15 at 16:10

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