IT. Expert System.

All Superinterfaces:

Cloneable

All Known Subinterfaces:

AttributedCharacterIterator

All Known Implementing Classes:

StringCharacterIterator

public interface CharacterIterator
extends Cloneable

• Field Summary

  Fields

  Modifier and Type	Field and Description
  static char	DONE A constant which indicates that there is no character at the current index.

• Method Summary

  Methods

  Modifier and Type	Method and Description
  Object	clone() Returns a new CharacterIterator with the same properties.
  char	current() Returns the character at the current index.
  char	first() Sets the current position to the begin index and returns the character at the new position.
  int	getBeginIndex() Returns the begin index.
  int	getEndIndex() Returns the end index.
  int	getIndex() Returns the current index.
  char	last() Sets the current position to the end index - 1 and returns the character at the new position.
  char	next() Increments the current index and returns the character at the new index.
  char	previous() Decrements the current index and returns the character at the new index.
  char	setIndex(int location) Sets the current index to a new position and returns the character at the new index.

• Field Detail

  • DONE

    static final char DONE

    A constant which indicates that there is no character at the current index.

    See Also:

    Constant Field Values

• Method Detail

  • clone

    Object clone()

    Returns a new CharacterIterator with the same properties.

    Returns:

    a shallow copy of this character iterator.

    See Also:

    Cloneable

  • current

    char current()

    Returns the character at the current index.

    Returns:

    the current character, or DONE if the current index is past the beginning or end of the sequence.

  • first

    char first()

    Sets the current position to the begin index and returns the character at the new position.

    Returns:

    the character at the begin index.

  • getBeginIndex

    int getBeginIndex()

    Returns the begin index.

    Returns:

    the index of the first character of the iteration.

  • getEndIndex

    int getEndIndex()

    Returns the end index.

    Returns:

    the index one past the last character of the iteration.

  • getIndex

    int getIndex()

    Returns the current index.

    Returns:

    the current index.

  • last

    char last()

    Sets the current position to the end index - 1 and returns the character at the new position.

    Returns:

    the character before the end index.

  • next

    char next()

    Increments the current index and returns the character at the new index.

    Returns:

    the character at the next index, or DONE if the next index would be past the end.

  • previous

    char previous()

    Decrements the current index and returns the character at the new index.

    Returns:

    the character at the previous index, or DONE if the previous index would be past the beginning.

  • setIndex

    char setIndex(int location)

    Sets the current index to a new position and returns the character at the new index.

    Parameters:

    location - the new index that this character iterator is set to.

    Returns:

    the character at the new index, or DONE if the index is past the end.

    Throws:

    IllegalArgumentException - if location is less than the begin index or greater than the end index.