CharSequence

All Known Implementing Classes:

String, StringBuffer, StringBuilder
```
public interface CharSequence
```

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and 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

Interface CharSequence

Method Summary

Method Detail

charAt

length

subSequence

toString