import java.util.*;
public class ExpressionEvaluator
{
	//Instance Variables
	private String expression;
	private int value;
	
	//Constructor
	public ExpressionEvaluator(String expression)
	{
		this.expression = expression.trim();
		
		this.value = evaluate( tokenize(this.expression) );
	}
	
	//Accessor
	public String getExpression()
	{
		return this.expression;
	}
	
	//Accessor
	public int getValue()
	{
		return this.value;
	}
	
	//Return a Queue containing the tokens from an expression
	//The tokens are stored in the same order as they occur
	//		in the expression
	private Queue tokenize(String expression)
	{
		return null;
	}
	
	//Evaluate an expression by processing the
	//expression tokens from a queue of tokens
	private int evaluate( Queue infix )
	{
		return 0;
	}
	
	//****************** Helper Methods ********************
}