Methods

#Pattern

• Pattern compile(String regex [, int flags])
• boolean matches([String regex, ] CharSequence input)
• String[] split(String regex [, int limit])
• String quote(String s)

#Matcher

• int start([int group | String name])
• int end([int group | String name])
• boolean find([int start])
• String group([int group | String name])
• Matcher reset()

#String

• boolean matches(String regex)
• String replaceAll(String regex, String replacement)
• String[] split(String regex[, int limit]) There are more methods …