package beans;

public class CalculatorBean
{
    int xvalue = 0;
    int yvalue = 0;
    int status = 1;  // 1: success 0: error
    String errormessage = "";

    public void setXvalue(String sx)
    {
    	try
    	{
    		xvalue = Integer.parseInt(sx);
    	}
    	catch(Exception e)
    	{
    		status = 0;
    		xvalue = 0;
    		errormessage += "</br>Fill in a value in the upper field";
    	}
    }

    public int getXvalue()
    {
    	return xvalue;
    }

    public void setYvalue(String sy)
    {
    	try
    	{
    		yvalue = Integer.parseInt(sy);
    	}
    	catch(Exception e)
    	{
    		status = 0;
    		yvalue = 0;
    		errormessage += "</br>Fill in a value in the lower field";
    	}
    }

    public int getYvalue()
    {
    	return yvalue;
    }

    public int getSum()
    {
        return xvalue + yvalue;
    }

    public String getErrormessage() {
    	return errormessage;
    }

    public boolean isValid()
    {
        return status == 1;
    }
}