Class EmptyCharacterClass

  • All Implemented Interfaces:
    java.util.function.IntPredicate, CharacterClass

    public class EmptyCharacterClass
    extends java.lang.Object
    implements CharacterClass
    A character class represents a set of characters for regex matching purposes. The empty character class matches no characters
    • Method Detail

      • test

        public boolean test​(int value)
        Specified by:
        test in interface java.util.function.IntPredicate
      • isDisjoint

        public boolean isDisjoint​(CharacterClass other)
        Description copied from interface: CharacterClass
        Ask whether this character class is known to be disjoint with another character class (that is, the two classes have no characters in common). If in doubt, return false.
        Specified by:
        isDisjoint in interface CharacterClass
        other - the other character class
        true if the character classes are known to be disjoint; false if there may be characters in common between the two classes
      • getIntSet

        public IntSet getIntSet()
        Description copied from interface: CharacterClass
        Get the set of matching characters if available. If not available, return null
        Specified by:
        getIntSet in interface CharacterClass