java.lang
Interface CharSequence

All Known Subinterfaces:

Name

All Known Implementing Classes:

CharBuffer, Segment, String, StringBuffer, StringBuilder

public interface CharSequence

CharSequence is an interface that provides a read-only access to a sequence of characters.

Since:

1.4

Method Summary

char	charAt(int index) charAt returns the character at given position.
int	length() length the length of this sequence.
CharSequence	subSequence(int start, int end) subSequence creates a subsequence of this sequence.
String	toString() toString returns a string with the characters from this sequence.

Method Detail

length

int length()

length the length of this sequence.

Returns:

the number of chars in this sequence.

charAt

char charAt(int index)

charAt returns the character at given position.

Parameters:

index - the position

Returns:

the character at this position.

Throws:

IndexOutOfBoundsException - if index<0 || index>=length()

subSequence

CharSequence subSequence(int start,
                         int end)

subSequence creates a subsequence of this sequence.

Parameters:

start - the start position.

end - the end position.

Returns:

a subsequence

Throws:

IndexOutOfBoundsException - if start<0 || endlength().

toString

String toString()

toString returns a string with the characters from this sequence.

ensures

   (result.length() == length()
    && for all i: 0<=i && i result.charAt(i) == charAt(i));
 

Overrides:

toString in class Object

Returns:

the string.