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 Java Matcher class has a lot of useful methods.

What is pattern in Java?

Pattern ), is the main access point of the Java regular expression API. ... The Java Pattern class can be used in two ways. You can use the Pattern. matches() method to quickly check if a text (String) matches a given regular expression. Or you can compile a Pattern instance using Pattern.

What is matcher and matches?

An engine that performs match operations on a character sequence by interpreting a Pattern . A matcher is created from a pattern by invoking the pattern's matcher method. ... The matches method attempts to match the entire input sequence against the pattern.