<code ="Java">
package MachineLearning;

import java.util.*;

public class AttrChangeCollection
{
	
	private HashMap<Integer, AttributChange> m_attrChangeCollection;

	
	public AttrChangeCollection()
	{
		m_attrChangeCollection = new HashMap<Integer, AttributChange>();
	}

	
	public void Add(ArrayList<Integer> tresholds, Integer attrIndex)
	{
		if (!m_attrChangeCollection.containsKey(attrIndex))
		{
			AttributChange attrChange = new AttributChange(tresholds,attrIndex);
			m_attrChangeCollection.put(attrIndex, attrChange);
		}
	}

	public void Change(Object[][] examples, Integer attrIndex)
	{
		if(m_attrChangeCollection.containsKey(attrIndex))
		{
			m_attrChangeCollection.get(attrIndex).Change(examples);
		}
	}

	public void Change(Object[][] examples)
	{
		for (AttributChange attrChange : m_attrChangeCollection.values())
		{
			attrChange.Change(examples);
		}
	}

	public void Change(Object[] example)
	{
		for (AttributChange attrChange : m_attrChangeCollection.values())
		{
			attrChange.Change(example);
		}
	}

	public void WriteAggregateValues()
	{
		if (m_attrChangeCollection.size() > 0)
		{
			WriteFile sw = new WriteFile();
			sw.open("Aggregate.txt");
			
			sw.writeLine("Nowy atrybut");
			sw.writeLine("\tStary atrybut");
			
			m_attrChangeCollection.get(0).WriteOldNewValues("DaysOfWeek", sw, Days.values());

			m_attrChangeCollection.get(1).WriteOldNewValues("Hour", sw);

			m_attrChangeCollection.get(2).WriteOldNewValues("Month", sw, Month.values());

			sw.close();
		}
	}
}
</code>