Class EncodingUtils


  • public class EncodingUtils
    extends java.lang.Object
    Utility methods for use when encoding/decoding raw data as byte arrays.
    • Constructor Summary

      Constructors 
      Constructor Description
      EncodingUtils()  
    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static byte clearBit​(byte v, int position)
      Returns v, with the bit at position set to zero.
      static int clearBit​(int v, int position)  
      static long clearBit​(long v, int position)  
      static short clearBit​(short v, int position)  
      static int decodeBigEndian​(byte[] buf)
      Decode a series of 4 bytes from buf, starting at position 0, and interpret them as an integer.
      static int decodeBigEndian​(byte[] buf, int offset)
      Decode a series of 4 bytes from buf, start at offset, and interpret them as an integer.
      static void encodeBigEndian​(int integer, byte[] buf)
      Encode integer as a series of 4 bytes into buf starting at position 0 within that buffer.
      static void encodeBigEndian​(int integer, byte[] buf, int offset)
      Encode integer as a series of 4 bytes into buf starting at position offset.
      static byte setBit​(byte v, int position, boolean value)
      Returns v, with the bit at position set to 1 or 0 depending on value.
      static int setBit​(int v, int position, boolean value)  
      static long setBit​(long v, int position, boolean value)  
      static short setBit​(short v, int position, boolean value)  
      static boolean testBit​(byte v, int position)
      Bitfield utilities.
      static boolean testBit​(int v, int position)  
      static boolean testBit​(long v, int position)  
      static boolean testBit​(short v, int position)  
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • EncodingUtils

        public EncodingUtils()
    • Method Detail

      • encodeBigEndian

        public static final void encodeBigEndian​(int integer,
                                                 byte[] buf)
        Encode integer as a series of 4 bytes into buf starting at position 0 within that buffer.
        Parameters:
        integer - The integer to encode.
        buf - The buffer to write to.
      • encodeBigEndian

        public static final void encodeBigEndian​(int integer,
                                                 byte[] buf,
                                                 int offset)
        Encode integer as a series of 4 bytes into buf starting at position offset.
        Parameters:
        integer - The integer to encode.
        buf - The buffer to write to.
        offset - The offset within buf to start the encoding.
      • decodeBigEndian

        public static final int decodeBigEndian​(byte[] buf)
        Decode a series of 4 bytes from buf, starting at position 0, and interpret them as an integer.
        Parameters:
        buf - The buffer to read from.
        Returns:
        An integer, as read from the buffer.
      • decodeBigEndian

        public static final int decodeBigEndian​(byte[] buf,
                                                int offset)
        Decode a series of 4 bytes from buf, start at offset, and interpret them as an integer.
        Parameters:
        buf - The buffer to read from.
        offset - The offset with buf to start the decoding.
        Returns:
        An integer, as read from the buffer.
      • testBit

        public static final boolean testBit​(byte v,
                                            int position)
        Bitfield utilities. Returns true if the bit at position is set in v.
      • testBit

        public static final boolean testBit​(short v,
                                            int position)
      • testBit

        public static final boolean testBit​(int v,
                                            int position)
      • testBit

        public static final boolean testBit​(long v,
                                            int position)
      • clearBit

        public static final byte clearBit​(byte v,
                                          int position)
        Returns v, with the bit at position set to zero.
      • clearBit

        public static final short clearBit​(short v,
                                           int position)
      • clearBit

        public static final int clearBit​(int v,
                                         int position)
      • clearBit

        public static final long clearBit​(long v,
                                          int position)
      • setBit

        public static final byte setBit​(byte v,
                                        int position,
                                        boolean value)
        Returns v, with the bit at position set to 1 or 0 depending on value.
      • setBit

        public static final short setBit​(short v,
                                         int position,
                                         boolean value)
      • setBit

        public static final int setBit​(int v,
                                       int position,
                                       boolean value)
      • setBit

        public static final long setBit​(long v,
                                        int position,
                                        boolean value)