How do you find a string in regex?

With RegEx you can use pattern matching to search for particular strings of characters rather than constructing multiple, literal search queries.

Java Regex Finder Example

Java String substring() Method Example 2

To check if a String matches a Pattern one should perform the following steps:

The Java Matcher class ( java. util. regex. Matcher ) is used to search through a text for multiple occurrences of a regular expression . You can also use a Matcher to search for the same regular expression in different texts.

The toString() method of Matcher Class is used to get the String representation of this matcher . This method is derived from the Object Class and behaves in the similar way. Parameters: This method takes no parameters. Return Value: This method returns a String value which is the String representation of this matcher.