Java Utililty Methods ByteBuffer to Int

List of utility methods to do ByteBuffer to Int

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Description

The list of methods to do ByteBuffer to Int are organized into topic(s).

Method

intgetUnsignedByte(ByteBuffer bb)
get Unsigned Byte 
return bb.get() & 0xFF;
intgetUnsignedByte(ByteBuffer buffer)
Read an unsigned byte from a buffer 
int pos = buffer.position();
int rtn = getUnsignedByte(buffer, pos);
buffer.position(pos + 1);
return rtn;
longgetUnsignedInt(ByteBuffer bb)
Get a unsigned int from byte buffer an put the value in a long 
if (bb.remaining() >= 4) {
    return ((0x0FF & bb.get()) << 24) + ((0x0FF & bb.get()) << 16) + ((0x0FF & bb.get()) << 8)
            + (0x0FF & bb.get());
} else {
    throw new IndexOutOfBoundsException();
longgetUnsignedInt(ByteBuffer buffer)
Read an unsigned integer from the current position in the buffer, incrementing the position by 4 bytes 
return buffer.getInt() & 0xffffffffL;
longgetUnsignedInt(ByteBuffer buffer)
Read an unsigned integer from the current position in the buffer, incrementing the position by 4 bytes 
return buffer.getInt() & 0xffffffffL;
intgetUnsignedInt(ByteBuffer buffer)
Reads a big-endian (31-bit) integer from the buffer and advances position. 
return (buffer.get() & 0x7F) << 24 | (buffer.get() & 0xFF) << 16 | (buffer.get() & 0xFF) << 8
        | buffer.get() & 0xFF;
intgetUnsignedInt16LSBMSB(ByteBuffer byteBuffer)
get Unsigned Int LSBMSB 
byte[] bytes = getBytes(byteBuffer, 2 * NUM_SHORT_BITS);
int value = 0;
for (int i = 0; i < NUM_SHORT_BITS; i++) {
    value += getUnsignedByte(bytes[i]) << (NUM_INTEGER_BITS * i);
return value;
BigIntegergetUnsignedLong(ByteBuffer buf)
get Unsigned Long 
byte[] data = new byte[8];
buf.get(data);
return new BigInteger(data);
longgetUnsignedLong(final ByteBuffer src)
Gets an unsigned long at the current position in the buffer. 
return (src.getLong() & LONG_FLAG_MASK_LONG);
intgetUnsignedShort(ByteBuffer bb)
Returns an integer. 
return (bb.getShort(0) & 0xffff);