JAVA : problem with terminalio

i am using sun's java sdk.

the problem is that a program will not compile while using terminalio package. i don't think there is anything wrong with the code, but i am confused about the error message i get.

Code:

C:\j2sdk1.4.2_01\school>type Momentum.java
/** Assignment #11 Momentum
* Version 1
* 9/26/03
* AP Computer Science
*
* This program will determine the momentum of an object
* The user must input the mass and velocity first
*/


import TerminalIO.KeyoardReader;             //import class from package

public class Momentum
{
   public static void main (String [] args)
        {
        KeyboardReader reader = new KeyboardReader();    //make new object
        int mass, velocity, momentum;                //declare variables

        System.out.print("Enter kilograms mass: ");
        System.out.print("Enter meters per second velocity: ");
        mass = reader.readdouble();
        velocity = reader.readdouble();

        momentum = mass * velocity;

        System.out.print("The equivalent in the momentum is: \"momentum\" ");

        reader.pause();
        }
}
C:\j2sdk1.4.2_01\school>javac Momentum.java
Momentum.java:12: cannot resolve symbol
symbol  : class KeyoardReader
location: package TerminalIO
import TerminalIO.KeyoardReader;             //import class from package
                  ^
Momentum.java:18: cannot resolve symbol
symbol  : class KeyboardReader
location: class Momentum
        KeyboardReader reader = new KeyboardReader();    //make new object
        ^
Momentum.java:18: cannot resolve symbol
symbol  : class KeyboardReader
location: class Momentum
        KeyboardReader reader = new KeyboardReader();    //make new object
                                    ^
3 errors

C:\j2sdk1.4.2_01\school>

Is there something wrong with the "K" ?

thank you

These may help you...

http://faculty.cs.wwu.edu/martin/Sof...egal_stuff.htm

http://forum.java.sun.com/