JPEGHuffmanTable (Other API Bundled with the Java 2 SDK)

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## com.sun.image.codec.jpeg
Class JPEGHuffmanTable

    java.lang.Object
      |
      +--com.sun.image.codec.jpeg.JPEGHuffmanTable

public class JPEGHuffmanTable
extends Object

A class to encapsulate a JPEG Huffman table.

Note that the classes in the com.sun.image.codec.jpeg package are not part of the core Java APIs. They are a part of Sun's JDK and JRE distributions. Although other licensees may choose to distribute these classes, developers cannot depend on their availability in non-Sun implementations. We expect that equivalent functionality will eventually be available in a core API or standard extension.

Field Summary
`static JPEGHuffmanTable` | `StdACChrominance` Standard Huffman table ( JPEG standard section K.3 )
`static JPEGHuffmanTable` | `StdACLuminance` Standard Huffman table ( JPEG standard section K.3 )
`static JPEGHuffmanTable` | `StdDCChrominance` Standard Huffman table ( JPEG standard section K.3 )
`static JPEGHuffmanTable` | `StdDCLuminance` Standard Huffman table ( JPEG standard section K.3 )

Constructor Summary
`JPEGHuffmanTable(short[] lengths, short[] symbols)` Creates a Huffman Table and initializes it.

Method Summary
`short[]` | `getLengths()` Return a copy of the array containing the number of symbols for each length in the Huffman table.
`short[]` | `getSymbols()` Return an array containing the Huffman symbols arranged by increasing length.

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

Field Detail

### StdDCLuminance

    public static final JPEGHuffmanTable StdDCLuminance

  Standard Huffman table ( JPEG standard section K.3 )

### StdDCChrominance

    public static final JPEGHuffmanTable StdDCChrominance

  Standard Huffman table ( JPEG standard section K.3 )

### StdACLuminance

    public static final JPEGHuffmanTable StdACLuminance

  Standard Huffman table ( JPEG standard section K.3 )

### StdACChrominance

    public static final JPEGHuffmanTable StdACChrominance

  Standard Huffman table ( JPEG standard section K.3 )

Constructor Detail

### JPEGHuffmanTable

    public JPEGHuffmanTable(short[] lengths,
                            short[] symbols)

  Creates a Huffman Table and initializes it.

Parameters:
  `lengths` - lengths[k] = # of symbols with codes of length k bits; lengths[0] is ignored
  `symbols` - symbols in order of increasing code length
Throws:
  `IllegalArgumentException` - if the length of `lengths` is greater than 17
  `IllegalArgumentException` - if the length of `symbols` is greater than 256
  `IllegalArgumentException` - if any of the values in `lengths` or `symbols` is less than zero

Method Detail

### getLengths

    public short[] getLengths()

  Return a copy of the array containing the number of symbols for each length in the Huffman table.

  Returns:
    A short array where array[k] = # of symbols in the table of length k. array[0] is unused

### getSymbols

    public short[] getSymbols()

  Return an array containing the Huffman symbols arranged by increasing length. To make use of this array you must refer the the lengths array.

  Returns:
    A short array of Huffman symbols

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