Implementation of state machine described by graphic in http://antonioparata.blogspot.it/2017/09/using-mealy-automata-for-string.html

obfuscate.java

import java.lang.*;

public class obfuscate
{
	enum StateType
	{
		kUninitialized,
		kDestroyed,
		k0,
		k1,
		k2,
		k3,
	};

	protected StateType mState = StateType.kUninitialized;

	protected void EnterWriteA()
	{
		System.out.print('A');
	}

	protected void EnterWriteI()
	{
		System.out.print('I');
	}

	protected void EnterWriteN()
	{
		System.out.print('N');
	}

	protected void EnterWriteO()
	{
		System.out.print('O');
	}

	protected void EnterWriteT()
	{
		System.out.print('T');
	}

	protected void On0()
	{
		assert(mState == StateType.k0 || mState == StateType.k1 || mState == StateType.k2 || mState == StateType.k3);

		switch (mState)
		{
			case k0:
				mState = StateType.k1;

				EnterWriteA();
				break;

			case k1:
				EnterWriteT();
				break;

			case k2:
				mState = StateType.k0;

				EnterWriteI();
				break;

			case k3:
				mState = StateType.k1;

				EnterWriteO();
				break;

			default:
				break;
		}
	}

	protected void On1()
	{
		assert(mState == StateType.k0 || mState == StateType.k1 || mState == StateType.k2 || mState == StateType.k3);

		switch (mState)
		{
			case k0:
				mState = StateType.k3;

				EnterWriteA();
				break;

			case k1:
				mState = StateType.k2;

				EnterWriteN();
				break;

			case k2:
				mState = StateType.k3;

				EnterWriteT();
				break;

			case k3:
				EnterWriteN();
				break;

			default:
				break;
		}
	}

	protected void OnConstruct()
	{
		assert(mState == StateType.kUninitialized);

		if (mState == StateType.kUninitialized)
		{
			mState = StateType.k0;
		}
	}

	protected void OnDestruct()
	{
		assert(mState == StateType.k0 || mState == StateType.k1 || mState == StateType.k2 || mState == StateType.k3);

		switch (mState)
		{
			case k0:
			case k1:
			case k2:
			case k3:
				mState = StateType.kDestroyed;
				break;

			default:
				break;
		}
	}

	public obfuscate()
	{
		mState = StateType.kUninitialized;

		OnConstruct();
	}

	public void finalize() throws Throwable
	{
		OnDestruct();
		
		super.finalize();
	}

	public static void main(String arg[])
	{
		if (arg.length == 1)
		{
			if (arg[0].length() > 0)
			{
				obfuscate fsm = new obfuscate();

				for(int i = 0; i < arg[0].length(); i++)
				{
					if (arg[0].charAt(i) == '0')
					{
						fsm.On0();
					}
					else if (arg[0].charAt(i) == '1')
					{
						fsm.On1();
					}
				}
			}
		}

		System.out.println();
	}
};