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/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
public class DFA
{
	private Map<Transition, State> transitions;
	private State                  startState;
	private Set<State>             finalStates;
 
	public DFA(State start)
	{
		transitions = new HashMap<Transition, State>();
		finalStates = new HashSet<State>();
		startState = start;
	}
 
	public void addTransition(State from, char on, State to)
	{
		Transition t = new Transition(from, on);
		transitions.put(t, to);
	}
}
 
public class Transition
{
	private State startState;
	private char delta;
 
	Transition(State start, char d)
	{
		startState = start;
		delta = d;
	}
}
 
public class State
{
	private final String name;
 
	public State(final String n)
	{
		name = n;
	}
 
	public String getName()
	{
		return name;
	}
}
 

Main.java:7: error: class DFA is public, should be declared in a file named DFA.java
public class DFA
       ^
Main.java:27: error: class Transition is public, should be declared in a file named Transition.java
public class Transition
       ^
Main.java:39: error: class State is public, should be declared in a file named State.java
public class State
       ^
3 errors

Standard output is empty