Applet, use seperate class

Hi I am making a applet that uses a seperate class, but my IDE tells me
that when I try to use my seperate class, that it cannot resolve the
symbol (ie cant find it) ,or if I try to import the class, that it
expects a '.'. Here's the code

import java.awt.*;

public class Buiding
{
    private int width, height, topBuffer, sideBuffer, widthOfWindow,
heightOfWindow,
        heightOfThird;

    public Buiding(int width, int height)
    {
        this.width = width; this.height = height;
        topBuffer = height/20;
        sideBuffer = width/20;
        widthOfWindow = width/10;
        heightOfWindow = height/10;
        heightOfThird = height/3;
    }

    public void draw(int x, int y, Graphics page)
    {
        int origionalX = x, origionalY = y;
        page.drawRect(x, y, width, height);

        int randomXWidth = x - widthOfWindow;
        int randomX = (int)(Math.random()*randomXWidth);

        int randomYWidth = y + heightOfThird - 2*topBuffer -
heightOfWindow;
        int randomY = (int)(Math.random()*randomYWidth);

        randomX += x;
        randomY += y;

        page.fillRect(randomX,randomY,widthOfWindow,heightOfWindow);
    }
}

import java.applet.Applet;
import java.awt.*;
import Building; //stops here

public class test extends Applet
{
    private Building test; // or here if the above line is not there

    public void init()
    {
       test = new Building(100,100);
    }

    public void paint(Graphics g)
    {
        test.draw(10,10,g);
    }
}

Thanks for any help