Java Pattern.compile() is a static method in the Java Pattern class that compiles a regular expression into a Java Pattern object. This allows for efficient pattern matching on strings using the Java Matcher class. Introduced in Java 2004 with Java 5, compile() is essential for text processing, validation, and searching tasks in Java applications that require complex string manipulation.

https://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html