Java Utililty Methods ByteBuffer Compact

List of utility methods to do ByteBuffer Compact

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Description

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

Method

ByteBuffercompact(ByteBuffer buffer)
compact 
return buffer.compact();
voidcompact(ByteBuffer buffer)
compact 
if (buffer.hasRemaining()) {
    if (buffer.position() == 0) {
        buffer.position(buffer.remaining());
        buffer.limit(buffer.capacity());
    } else
        buffer.compact();
} else
    buffer.clear();
...
booleancompact(ByteBuffer buffer)
Compact the buffer 
if (buffer.position() == 0)
    return false;
boolean full = buffer.limit() == buffer.capacity();
buffer.compact().flip();
return full && buffer.limit() < buffer.capacity();
ByteBuffer[]compact(ByteBuffer[] buffers)
Compacts an array of byte buffers, retaining only the buffers that have remaining data. 
for (int i = 0; i < buffers.length; i++) {
    if (buffers[i].remaining() > 0) {
        if (i == 0)
            return buffers;
        ByteBuffer[] newBuffers = new ByteBuffer[buffers.length - i];
        System.arraycopy(buffers, i, newBuffers, 0, buffers.length - i);
        return newBuffers;
return null;
byte[]toCompactArray(ByteBuffer src)
Return an appropriately sized byte array filled with the contents of src. 
if (src.hasArray() && src.limit() >= src.capacity()) { 
    return src.array();
assertReadyForFreshRead(src);
byte[] dest = new byte[src.limit()];
src.get(dest); 
assert (src.position() == src.limit()); 
src.rewind(); 
...