java.lang
Interface CharSequence

All Known Subinterfaces:

Editable, GetChars, GraphicsOperations, Spannable, Spanned

All Known Implementing Classes:

AlteredCharSequence, CharArrayBuffer, CharBuffer, CharSequenceAdapter, CharToByteBufferAdapter, Layout.Ellipsizer, Layout.SpannedEllipsizer, ReadOnlyCharArrayBuffer, ReadWriteCharArrayBuffer, SpannableString, SpannableStringBuilder, SpannedString, String, StringBuffer, StringBuilder

public interface CharSequence

The CharSequence interface represents an ordered set of characters and the functions to probe them.

Method Summary

char	charAt(int index) Returns the character at the specified index, with the first character having index zero.
int	length() Returns the number of characters in the sequence.
CharSequence	subSequence(int start, int end) Returns a CharSequence from the start index (inclusive) to the end index (exclusive) of this sequence.
String	toString() Returns a String with the same characters and ordering of this CharSequence

Method Detail

length

int length()

Returns the number of characters in the sequence.

Returns:

the number of characters in the sequence

charAt

char charAt(int index)

Returns the character at the specified index, with the first character having index zero.

Parameters:

index - The index of the character to return

Returns:

The requested character

Throws:

IndexOutOfBoundsException - when index < 0 or index >= the length of the CharSequence

subSequence

CharSequence subSequence(int start,
                         int end)

Returns a CharSequence from the start index (inclusive) to the end index (exclusive) of this sequence.

Parameters:

start - The starting offset of the sub-sequence, that is, the index of the first character that goes into the sub-sequence

end - The ending offset of the sub-sequence, that is, the index of the first character after those that go into the sub-sequence

Returns:

The requested sub-sequence

Throws:

IndexOutOfBoundsException - when 1. either index is below 0 2. either index >= this.length() 3. start > end

toString

String toString()

Returns a String with the same characters and ordering of this CharSequence

Overrides:

toString in class Object

Returns:

a String based on the CharSequence