CharArrays (elasticsearch-extend 3.2 API)

java.lang.Object
- org.elasticsearch.common.CharArrays

```
public final class CharArrays
extends Object
```
Helper class similar to Arrays to handle conversions for Char arrays

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static boolean`	`charsBeginsWith(String prefix, char[] chars)`	Tests if a char[] contains a sequence of characters that match the prefix.
`static boolean`	`constantTimeEquals(char[] a, char[] b)`	Constant time equality check of char arrays to avoid potential timing attacks.
`static boolean`	`constantTimeEquals(String a, String b)`	Constant time equality check of strings to avoid potential timing attacks.
`static byte[]`	`toUtf8Bytes(char[] chars)`	Encodes the provided char[] to a UTF-8 byte[].
`static char[]`	`utf8BytesToChars(byte[] utf8Bytes)`	Decodes the provided byte[] to a UTF-8 char[].

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - utf8BytesToChars
```
public static char[] utf8BytesToChars(byte[] utf8Bytes)
```
    Decodes the provided byte[] to a UTF-8 char[]. This is done while avoiding conversions to String. The provided byte[] is not modified by this method, so the caller needs to take care of clearing the value if it is sensitive.
  - toUtf8Bytes
```
public static byte[] toUtf8Bytes(char[] chars)
```
    Encodes the provided char[] to a UTF-8 byte[]. This is done while avoiding conversions to String. The provided char[] is not modified by this method, so the caller needs to take care of clearing the value if it is sensitive.
  - charsBeginsWith
```
public static boolean charsBeginsWith(String prefix,
                                      char[] chars)
```
    Tests if a char[] contains a sequence of characters that match the prefix. This is like String.startsWith(String) but does not require conversion of the char[] to a string.
  - constantTimeEquals
```
public static boolean constantTimeEquals(char[] a,
                                         char[] b)
```
    Constant time equality check of char arrays to avoid potential timing attacks.
  - constantTimeEquals
```
public static boolean constantTimeEquals(String a,
                                         String b)
```
    Constant time equality check of strings to avoid potential timing attacks.