Package org.apache.tools.zip

# Class ZipEightByteInteger

java.lang.Object
org.apache.tools.zip.ZipEightByteInteger

    public final class ZipEightByteInteger
    extends java.lang.Object

Utility class that represents an eight byte integer with conversion rules for the big endian byte order of ZIP files.

- ## Field Summary

  Fields
  Modifier and Type | Field | Description
  --- | --- | ---
  `static ZipEightByteInteger` | `ZERO` |

- ## Constructor Summary

  Constructors
  Constructor | Description
  --- | ---
  `ZipEightByteInteger​(byte[] bytes)` | Create instance from bytes.
  `ZipEightByteInteger​(byte[] bytes, int offset)` | Create instance from the eight bytes starting at offset.
  `ZipEightByteInteger​(long value)` | Create instance from a number.
  `ZipEightByteInteger​(java.math.BigInteger value)` | Create instance from a number.

- ## Method Summary

  Modifier and Type | Method | Description
  --- | --- | ---
  `boolean` | `equals​(java.lang.Object o)` | Override to make two instances with same value equal.
  `byte[]` | `getBytes()` | Get value as eight bytes in big endian byte order.
  `static byte[]` | `getBytes​(long value)` | Get value as eight bytes in big endian byte order.
  `static byte[]` | `getBytes​(java.math.BigInteger value)` | Get value as eight bytes in big endian byte order.
  `long` | `getLongValue()` | Get value as Java long.
  `static long` | `getLongValue​(byte[] bytes)` | Helper method to get the value as a Java long from an eight-byte array
  `static long` | `getLongValue​(byte[] bytes, int offset)` | Helper method to get the value as a Java long from eight bytes starting at given array offset
  `java.math.BigInteger` | `getValue()` | Get value as Java long.
  `static java.math.BigInteger` | `getValue​(byte[] bytes)` | Helper method to get the value as a Java long from an eight-byte array
  `static java.math.BigInteger` | `getValue​(byte[] bytes, int offset)` | Helper method to get the value as a Java BigInteger from eight bytes starting at given array offset
  `int` | `hashCode()` | Override to make two instances with same value equal.
  `java.lang.String` | `toString()` |

  ### Methods inherited from class java.lang.Object

  `clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

- ## Field Details

  - ### ZERO

    public static final ZipEightByteInteger ZERO

- ## Constructor Details

  - ### ZipEightByteInteger

    public ZipEightByteInteger​(long value)
    Create instance from a number.
    Parameters:
      `value` - the long to store as a ZipEightByteInteger

  - ### ZipEightByteInteger

    public ZipEightByteInteger​(java.math.BigInteger value)
    Create instance from a number.
    Parameters:
      `value` - the BigInteger to store as a ZipEightByteInteger

  - ### ZipEightByteInteger

    public ZipEightByteInteger​(byte[] bytes)
    Create instance from bytes.
    Parameters:
      `bytes` - the bytes to store as a ZipEightByteInteger

  - ### ZipEightByteInteger

    public ZipEightByteInteger​(byte[] bytes, int offset)
    Create instance from the eight bytes starting at offset.
    Parameters:
      `bytes` - the bytes to store as a ZipEightByteInteger
      `offset` - the offset to start

- ## Method Details

  - ### getBytes

    public byte[] getBytes()
    Get value as eight bytes in big endian byte order.
    Returns:
      value as eight bytes in big endian order

  - ### getLongValue

    public long getLongValue()
    Get value as Java long.
    Returns:
      value as a long

  - ### getValue

    public java.math.BigInteger getValue()
    Get value as Java long.
    Returns:
      value as a long

  - ### getBytes

    public static byte[] getBytes​(long value)
    Get value as eight bytes in big endian byte order.
    Parameters:
      `value` - the value to convert
    Returns:
      value as eight bytes in big endian byte order

  - ### getBytes

    public static byte[] getBytes​(java.math.BigInteger value)
    Get value as eight bytes in big endian byte order.
    Parameters:
      `value` - the value to convert
    Returns:
      value as eight bytes in big endian byte order

  - ### getLongValue

    public static long getLongValue​(byte[] bytes, int offset)
    Helper method to get the value as a Java long from eight bytes starting at given array offset
    Parameters:
      `bytes` - the array of bytes
      `offset` - the offset to start
    Returns:
      the corresponding Java long value

  - ### getValue

    public static java.math.BigInteger getValue​(byte[] bytes, int offset)
    Helper method to get the value as a Java BigInteger from eight bytes starting at given array offset
    Parameters:
      `bytes` - the array of bytes
      `offset` - the offset to start
    Returns:
      the corresponding Java BigInteger value

  - ### getLongValue

    public static long getLongValue​(byte[] bytes)
    Helper method to get the value as a Java long from an eight-byte array
    Parameters:
      `bytes` - the array of bytes
    Returns:
      the corresponding Java long value

  - ### getValue

    public static java.math.BigInteger getValue​(byte[] bytes)
    Helper method to get the value as a Java long from an eight-byte array
    Parameters:
      `bytes` - the array of bytes
    Returns:
      the corresponding Java BigInteger value

  - ### equals

    public boolean equals​(java.lang.Object o)
    Override to make two instances with same value equal.
    Overrides:
      `equals` in class `java.lang.Object`
    Parameters:
      `o` - an object to compare
    Returns:
      true if the objects are equal

  - ### hashCode

    public int hashCode()
    Override to make two instances with same value equal.
    Overrides:
      `hashCode` in class `java.lang.Object`
    Returns:
      the hashCode of the value stored in the ZipEightByteInteger

  - ### toString

    public java.lang.String toString()
    Overrides:
      `toString` in class `java.lang.Object`