Examples of java.nio.ByteBuffer.flip()

java.nio.ByteBuffer.flip()

  
  public static ByteBuffer generateDirectByteBuffer(int length) {
    byte[] bytes = generateByteArray(length);
    ByteBuffer buffer = ByteBuffer.allocateDirect(bytes.length);
    buffer.put(bytes);
    buffer.flip();
    return buffer;
  }
  
  public static ByteBuffer[] generateDirectByteBufferArray(int elements, int length) {
    ByteBuffer[] byteBufferArray = new ByteBuffer[elements];

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      RandomAccessFile raf = new RandomAccessFile(file2, "r");
        FileChannel fc = raf.getChannel();
        ByteBuffer buf = ByteBuffer.allocate((int) fc.size());
        fc.read(buf);
        buf.flip();
        
        boolean isEquals = isEquals(file, new ByteBuffer[] { buf });
        
        fc.close();
        raf.close();

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    RandomAccessFile raf = new RandomAccessFile(file, "r");
    FileChannel fc = raf.getChannel();
    ByteBuffer buf = ByteBuffer.allocate(length);
    fc.read(buf);
    buf.flip();
    
    boolean isEquals = isEquals(buf, buffers);
    
    fc.close();
    raf.close();

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        ByteBuffer buffer = ByteBuffer.allocate((int) fc.size());
        fc.read(buffer);
        fc.close();
        raf.close();
        buffer.flip();
        
        // add part
        addPart(DataConverter.toByteBuffer(header), buffer);
  }

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    ReadableByteChannel bodyChannel= response.getBlockingBody();
      
    ByteBuffer transferBuffer = ByteBuffer.allocateDirect(8192);
            
    while (bodyChannel.read(transferBuffer) != -1) {
      transferBuffer.flip();
      
      while (transferBuffer.hasRemaining()) {
        fc.write(transferBuffer);
        }
      transferBuffer.clear();

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            ByteBuffer transferBuffer = ByteBuffer.allocate(chunkSize);
            read = source.read(transferBuffer);


            if (read > 0) {
                if (transferBuffer.remaining() == 0) {
                    transferBuffer.flip();
                    write(transferBuffer);


                } else {
                    transferBuffer.flip();
                    write(transferBuffer.slice());

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                if (transferBuffer.remaining() == 0) {
                    transferBuffer.flip();
                    write(transferBuffer);


                } else {
                    transferBuffer.flip();
                    write(transferBuffer.slice());
                }


                transfered += read;
            }

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                    byteBuffer.position(pos);
                    byteBuffer.limit(limit);
                }
            }
            
            buffer.flip();
            return buffer;
        }
    }

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        }
        
        ByteBuffer result = ByteBuffer.allocate(buffer.remaining() + tailBuffer.remaining());
        result.put(buffer);
        result.put(tailBuffer);
        result.flip();
            
        return result;          
    }

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        ByteBuffer buffer = ByteBuffer.allocate((int) fc.size());
        fc.read(buffer);
        fc.close();
        raf.close();
        buffer.flip();
        
        return new ByteBuffer[] { buffer };
    }

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