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

intgetUnsignedShort(ByteBuffer bb)
get Unsigned Short 
if (bb.remaining() >= 2) {
    return ((0x0FF & bb.get()) << 8) + (0x0FF & bb.get());
} else {
    throw new IndexOutOfBoundsException();
intgetUnsignedShort(ByteBuffer bb)
get Unsigned Short 
return (bb.getShort() & 0xffff);
intgetUnsignedShort(ByteBuffer buf)
This is a relative method for getting 2 unsigned bytes. 
return buf.getShort() & 0x0000FFFF;
intgetUnsignedShort(ByteBuffer buffer)
get Unsigned Short 
return buffer.getShort() & 0xFFFF;
intgetUnsignedShort(ByteBuffer buffer, int offset)
Reads a big-endian unsigned short integer from the buffer at the provided offset. 
return (buffer.get(offset) & 0xFF) << 8 | buffer.get(offset + 1) & 0xFF;
intgetUnsignedShort(ByteBuffer bytes)
get Unsigned Short 
if (bytes.remaining() < 2)
    throw new IOException("too few bytes specified for unsigned short value!");
byte b1 = bytes.get();
byte b2 = bytes.get();
int value = (int) ((0xff & b1) << 8 | (0xff & b2));
return value;
intgetUnsignedSmart(ByteBuffer buf)
Gets a unsigned smart from the buffer. 
int peek = buf.get(buf.position()) & 0xFF;
if (peek < 128)
    return buf.get() & 0xFF;
else
    return (buf.getShort() & 0xFFFF) - 32768;
intgetUnsignedSmartInt(ByteBuffer buffer)
get Unsigned Smart Int 
if ((buffer.get(buffer.position()) & 0xff) < 128) {
    return buffer.get() & 0xff;
int shortValue = buffer.getShort() & 0xFFFF;
return shortValue - 32768;
intgetUnsignedVarInt(ByteBuffer buffer, int numBytes)
Read an unsigned variable length int from a buffer 
int pos = buffer.position();
int rtn = getUnsignedVarInt(buffer, pos, numBytes);
buffer.position(pos + numBytes);
return rtn;
intgetUShort(ByteBuffer buffer)
get U Short 
assert (buffer.capacity() - buffer.position() >= 2);
byte[] data = new byte[2];
data[1] = buffer.get();
data[0] = buffer.get();
return ((data[0] << 8) & 0x0000ff00) | (data[1] & 0x000000ff);