Package java.lang

Interface CharSequence

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      char charAt​(int index)
      Returns the char value at the specified index.
      int length()
      Returns the length of this character sequence.
      CharSequence subSequence​(int start, int end)
      Returns a new CharSequence that is a subsequence of this sequence.
      String toString()
      Returns a string containing the characters in this sequence in the same order as this sequence.

    • Method Detail

      • charAt

        char charAt​(int index)
        Returns the char value at the specified index. An index ranges from zero to length() - 1. The first char value of the sequence is at index zero, the next at index one, and so on, as for array indexing.
        Parameters:
        index - the index of the char value to be returned
        Returns:
        the specified char value
        Throws:
        IndexOutOfBoundsException - if the index argument is negative or not less than length()

      • length

        int length()
        Returns the length of this character sequence. The length is the number of 16-bit chars in the sequence.
        Returns:
        the number of chars in this sequence

      • subSequence

        CharSequence subSequence​(int start,
                         int end)
        Returns a new CharSequence that is a subsequence of this sequence. The subsequence starts with the char value at the specified index and ends with the char value at index end - 1. The length (in chars) of the returned sequence is end - start, so if start == end then an empty sequence is returned.
        Parameters:
        start - the start index, inclusive
        end - the end index, exclusive
        Returns:
        the specified subsequence
        Throws:
        IndexOutOfBoundsException - if start or end are negative, if end is greater than length(), or if start is greater than end

      • toString

        String toString()
        Returns a string containing the characters in this sequence in the same order as this sequence. The length of the string will be the length of this sequence.
        Overrides:
        toString in class Object
        Returns:
        a string consisting of exactly this sequence of characters