How to Extract Text After a Regex Match?

Obtaining Text Following Regex Matches

In this query, the user seeks a Regex solution to retrieve text that appears immediately after a specific search term, excluding the search term itself. For instance, given the sentence "Some lame sentence that is awesome" and searching for the term "sentence," the desired output would be "that is awesome."

Solution:

Using a technique known as "positive lookbehind assertion," this task can be accomplished with a simple Regex expression:

(?<=sentence).*

Here's how it works:

• (?<=sentence): This part of the expression is a positive lookbehind assertion. It matches at a position right after the string "sentence" without making "sentence" part of the match.
• .*: The asterisk quantifier matches any number of characters following the lookbehind assertion.

Therefore, the entire expression (?<=sentence).* matches any text that comes after the term "sentence."

Java Implementation:

In Java, you can implement the solution using the following code:

Pattern pattern = Pattern.compile("(?<=sentence).*");
Matcher matcher = pattern.matcher("Some lame sentence that is awesome");

if (matcher.find()) {
    System.out.println("Found text: " + matcher.group());
} else {
    System.out.println("No matching text found");
}

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