How to use

bufferInput

method

in

weka.filters.unsupervised.instance.RemovePercentage

/**
 * Input an instance for filtering. Ordinarily the instance is processed and
 * made available for output immediately. Some filters require all instances
 * be read before producing output.
 * 
 * @param instance the input instance
 * @return true if the filtered instance may now be collected with output().
 * @throws IllegalStateException if no input format has been set.
 */
@Override
public boolean input(Instance instance) {
 if (getInputFormat() == null) {
  throw new IllegalStateException("No input instance format defined");
 }
 if (m_NewBatch) {
  resetQueue();
  m_NewBatch = false;
 }
 if (isFirstBatchDone()) {
  push(instance);
  return true;
 } else {
  bufferInput(instance);
  return false;
 }
}

/**
 * Input an instance for filtering. Ordinarily the instance is processed and
 * made available for output immediately. Some filters require all instances
 * be read before producing output.
 * 
 * @param instance the input instance
 * @return true if the filtered instance may now be collected with output().
 * @throws IllegalStateException if no input format has been set.
 */
@Override
public boolean input(Instance instance) {
 if (getInputFormat() == null) {
  throw new IllegalStateException("No input instance format defined");
 }
 if (m_NewBatch) {
  resetQueue();
  m_NewBatch = false;
 }
 if (isFirstBatchDone()) {
  push(instance);
  return true;
 } else {
  bufferInput(instance);
  return false;
 }
}