java.lang.Object
- okio.ByteString

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<ByteString>
```
public class ByteString
extends java.lang.Object
implements java.io.Serializable, java.lang.Comparable<ByteString>
```
An immutable sequence of bytes.
Byte strings compare lexicographically as a sequence of unsigned bytes. That is, the byte string ff sorts after 00. This is counter to the sort order of the corresponding bytes, where -1 sorts before 0.
Full disclosure: this class provides untrusted input and output streams with raw access to the underlying byte array. A hostile stream implementation could keep a reference to the mutable byte string, violating the immutable guarantee of this class. For this reason a byte string's immutability guarantee cannot be relied upon for security in applets and other environments that run both trusted and untrusted code in the same process.

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field Description

static ByteString EMPTY
A singleton empty ByteString.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.nio.ByteBuffer`	`asByteBuffer()`	Returns a `ByteBuffer` view of the bytes in this `ByteString`.
`java.lang.String`	`base64()`	Returns this byte string encoded as Base64.
`java.lang.String`	`base64Url()`	Returns this byte string encoded as URL-safe Base64.
`int`	`compareTo(ByteString byteString)`
`static ByteString`	`decodeBase64(java.lang.String base64)`	Decodes the Base64-encoded bytes and returns their value as a byte string.
`static ByteString`	`decodeHex(java.lang.String hex)`	Decodes the hex-encoded bytes and returns their value a byte string.
`static ByteString`	`encodeString(java.lang.String s, java.nio.charset.Charset charset)`	Returns a new byte string containing the `charset`-encoded bytes of `s`.
`static ByteString`	`encodeUtf8(java.lang.String s)`	Returns a new byte string containing the `UTF-8` bytes of `s`.
`boolean`	`endsWith(byte[] suffix)`
`boolean`	`endsWith(ByteString suffix)`
`boolean`	`equals(java.lang.Object o)`
`byte`	`getByte(int pos)`	Returns the byte at `pos`.
`int`	`hashCode()`
`java.lang.String`	`hex()`	Returns this byte string encoded in hexadecimal.
`ByteString`	`hmacSha1(ByteString key)`	Returns the 160-bit SHA-1 HMAC of this byte string.
`ByteString`	`hmacSha256(ByteString key)`	Returns the 256-bit SHA-256 HMAC of this byte string.
`ByteString`	`hmacSha512(ByteString key)`	Returns the 512-bit SHA-512 HMAC of this byte string.
`int`	`indexOf(byte[] other)`
`int`	`indexOf(byte[] other, int fromIndex)`
`int`	`indexOf(ByteString other)`
`int`	`indexOf(ByteString other, int fromIndex)`
`int`	`lastIndexOf(byte[] other)`
`int`	`lastIndexOf(byte[] other, int fromIndex)`
`int`	`lastIndexOf(ByteString other)`
`int`	`lastIndexOf(ByteString other, int fromIndex)`
`ByteString`	`md5()`	Returns the 128-bit MD5 hash of this byte string.
`static ByteString`	`of(byte... data)`	Returns a new byte string containing a clone of the bytes of `data`.
`static ByteString`	`of(byte[] data, int offset, int byteCount)`	Returns a new byte string containing a copy of `byteCount` bytes of `data` starting at `offset`.
`static ByteString`	`of(java.nio.ByteBuffer data)`
`boolean`	`rangeEquals(int offset, byte[] other, int otherOffset, int byteCount)`	Returns true if the bytes of this in `[offset..offset+byteCount)` equal the bytes of `other` in `[otherOffset..otherOffset+byteCount)`.
`boolean`	`rangeEquals(int offset, ByteString other, int otherOffset, int byteCount)`	Returns true if the bytes of this in `[offset..offset+byteCount)` equal the bytes of `other` in `[otherOffset..otherOffset+byteCount)`.
`static ByteString`	`read(java.io.InputStream in, int byteCount)`	Reads `count` bytes from `in` and returns the result.
`ByteString`	`sha1()`	Returns the 160-bit SHA-1 hash of this byte string.
`ByteString`	`sha256()`	Returns the 256-bit SHA-256 hash of this byte string.
`ByteString`	`sha512()`	Returns the 512-bit SHA-512 hash of this byte string.
`int`	`size()`	Returns the number of bytes in this ByteString.
`boolean`	`startsWith(byte[] prefix)`
`boolean`	`startsWith(ByteString prefix)`
`java.lang.String`	`string(java.nio.charset.Charset charset)`	Constructs a new `String` by decoding the bytes using `charset`.
`ByteString`	`substring(int beginIndex)`	Returns a byte string that is a substring of this byte string, beginning at the specified index until the end of this string.
`ByteString`	`substring(int beginIndex, int endIndex)`	Returns a byte string that is a substring of this byte string, beginning at the specified `beginIndex` and ends at the specified `endIndex`.
`ByteString`	`toAsciiLowercase()`	Returns a byte string equal to this byte string, but with the bytes 'A' through 'Z' replaced with the corresponding byte in 'a' through 'z'.
`ByteString`	`toAsciiUppercase()`	Returns a byte string equal to this byte string, but with the bytes 'a' through 'z' replaced with the corresponding byte in 'A' through 'Z'.
`byte[]`	`toByteArray()`	Returns a byte array containing a copy of the bytes in this `ByteString`.
`java.lang.String`	`toString()`	Returns a human-readable string that describes the contents of this byte string.
`java.lang.String`	`utf8()`	Constructs a new `String` by decoding the bytes as `UTF-8`.
`void`	`write(java.io.OutputStream out)`	Writes the contents of this byte string to `out`.

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

- Field Detail
  - EMPTY
```
public static final ByteString EMPTY
```
    A singleton empty ByteString.
- Method Detail
  - of
```
public static ByteString of(byte... data)
```
    Returns a new byte string containing a clone of the bytes of data.
  - of
```
public static ByteString of(byte[] data,
                            int offset,
                            int byteCount)
```
    Returns a new byte string containing a copy of byteCount bytes of data starting at offset.
  - of
```
public static ByteString of(java.nio.ByteBuffer data)
```
  - encodeUtf8
```
public static ByteString encodeUtf8(java.lang.String s)
```
    Returns a new byte string containing the UTF-8 bytes of s.
  - encodeString
```
public static ByteString encodeString(java.lang.String s,
                                      java.nio.charset.Charset charset)
```
    Returns a new byte string containing the charset-encoded bytes of s.
  - utf8
```
public java.lang.String utf8()
```
    Constructs a new String by decoding the bytes as UTF-8.
  - string
```
public java.lang.String string(java.nio.charset.Charset charset)
```
    Constructs a new String by decoding the bytes using charset.
  - base64
```
public java.lang.String base64()
```
    Returns this byte string encoded as Base64. In violation of the RFC, the returned string does not wrap lines at 76 columns.
  - md5
```
public ByteString md5()
```
    Returns the 128-bit MD5 hash of this byte string.
  - sha1
```
public ByteString sha1()
```
    Returns the 160-bit SHA-1 hash of this byte string.
  - sha256
```
public ByteString sha256()
```
    Returns the 256-bit SHA-256 hash of this byte string.
  - sha512
```
public ByteString sha512()
```
    Returns the 512-bit SHA-512 hash of this byte string.
  - hmacSha1
```
public ByteString hmacSha1(ByteString key)
```
    Returns the 160-bit SHA-1 HMAC of this byte string.
  - hmacSha256
```
public ByteString hmacSha256(ByteString key)
```
    Returns the 256-bit SHA-256 HMAC of this byte string.
  - hmacSha512
```
public ByteString hmacSha512(ByteString key)
```
    Returns the 512-bit SHA-512 HMAC of this byte string.
  - base64Url
```
public java.lang.String base64Url()
```
    Returns this byte string encoded as URL-safe Base64.
  - decodeBase64
```
@Nullable
public static ByteString decodeBase64(java.lang.String base64)
```
    Decodes the Base64-encoded bytes and returns their value as a byte string. Returns null if base64 is not a Base64-encoded sequence of bytes.
  - hex
```
public java.lang.String hex()
```
    Returns this byte string encoded in hexadecimal.
  - decodeHex
```
public static ByteString decodeHex(java.lang.String hex)
```
    Decodes the hex-encoded bytes and returns their value a byte string.
  - read
```
public static ByteString read(java.io.InputStream in,
                              int byteCount)
                       throws java.io.IOException
```
    Reads count bytes from in and returns the result.
    
    Throws:
    
    java.io.EOFException - if in has fewer than count bytes to read.
    
    java.io.IOException
  - toAsciiLowercase
```
public ByteString toAsciiLowercase()
```
    Returns a byte string equal to this byte string, but with the bytes 'A' through 'Z' replaced with the corresponding byte in 'a' through 'z'. Returns this byte string if it contains no bytes in 'A' through 'Z'.
  - toAsciiUppercase
```
public ByteString toAsciiUppercase()
```
    Returns a byte string equal to this byte string, but with the bytes 'a' through 'z' replaced with the corresponding byte in 'A' through 'Z'. Returns this byte string if it contains no bytes in 'a' through 'z'.
  - substring
```
public ByteString substring(int beginIndex)
```
    Returns a byte string that is a substring of this byte string, beginning at the specified index until the end of this string. Returns this byte string if beginIndex is 0.
  - substring
```
public ByteString substring(int beginIndex,
                            int endIndex)
```
    Returns a byte string that is a substring of this byte string, beginning at the specified beginIndex and ends at the specified endIndex. Returns this byte string if beginIndex is 0 and endIndex is the length of this byte string.
  - getByte
```
public byte getByte(int pos)
```
    Returns the byte at pos.
  - size
```
public int size()
```
    Returns the number of bytes in this ByteString.
  - toByteArray
```
public byte[] toByteArray()
```
    Returns a byte array containing a copy of the bytes in this ByteString.
  - asByteBuffer
```
public java.nio.ByteBuffer asByteBuffer()
```
    Returns a ByteBuffer view of the bytes in this ByteString.
  - write
```
public void write(java.io.OutputStream out)
           throws java.io.IOException
```
    Writes the contents of this byte string to out.
    
    Throws:
    
    java.io.IOException
  - rangeEquals
```
public boolean rangeEquals(int offset,
                           ByteString other,
                           int otherOffset,
                           int byteCount)
```
    Returns true if the bytes of this in [offset..offset+byteCount) equal the bytes of other in [otherOffset..otherOffset+byteCount). Returns false if either range is out of bounds.
  - rangeEquals
```
public boolean rangeEquals(int offset,
                           byte[] other,
                           int otherOffset,
                           int byteCount)
```
    Returns true if the bytes of this in [offset..offset+byteCount) equal the bytes of other in [otherOffset..otherOffset+byteCount). Returns false if either range is out of bounds.
  - startsWith
```
public final boolean startsWith(ByteString prefix)
```
  - startsWith
```
public final boolean startsWith(byte[] prefix)
```
  - endsWith
```
public final boolean endsWith(ByteString suffix)
```
  - endsWith
```
public final boolean endsWith(byte[] suffix)
```
  - indexOf
```
public final int indexOf(ByteString other)
```
  - indexOf
```
public final int indexOf(ByteString other,
                         int fromIndex)
```
  - indexOf
```
public final int indexOf(byte[] other)
```
  - indexOf
```
public int indexOf(byte[] other,
                   int fromIndex)
```
  - lastIndexOf
```
public final int lastIndexOf(ByteString other)
```
  - lastIndexOf
```
public final int lastIndexOf(ByteString other,
                             int fromIndex)
```
  - lastIndexOf
```
public final int lastIndexOf(byte[] other)
```
  - lastIndexOf
```
public int lastIndexOf(byte[] other,
                       int fromIndex)
```
  - equals
```
public boolean equals(java.lang.Object o)
```
    Overrides:
    
    equals in class java.lang.Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class java.lang.Object
  - compareTo
```
public int compareTo(ByteString byteString)
```
    Specified by:
    
    compareTo in interface java.lang.Comparable<ByteString>
  - toString
```
public java.lang.String toString()
```
    Returns a human-readable string that describes the contents of this byte string. Typically this is a string like [text=Hello] or [hex=0000ffff].
    
    Overrides:
    
    toString in class java.lang.Object

Class ByteString

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

EMPTY

Method Detail

of

of

of

encodeUtf8

encodeString

utf8

string

base64

md5

sha1

sha256

sha512

hmacSha1

hmacSha256

hmacSha512

base64Url

decodeBase64

hex

decodeHex

read

toAsciiLowercase

toAsciiUppercase

substring

substring

getByte

size

toByteArray

asByteBuffer

write

rangeEquals

rangeEquals

startsWith

startsWith

endsWith

endsWith

indexOf

indexOf

indexOf

indexOf

lastIndexOf

lastIndexOf

lastIndexOf

lastIndexOf

equals

hashCode

compareTo

toString