Import cs1.Keyboard doesn't work

Question

Please help I am writing my second program and I have been told
that 'Class cs1.keyboard not found in import' when I compiled it.
My code is....
import cs1.Keyboard;
public class three_int
public static void main (String[]args)
int a,b,c;
float average;
System.out.print ("Enter a number for a: ");
a = Keyboard.readInt();
System.out.print ("Enter a number for b: ");
b = Keyboard.readInt();
System.out.print ("Enter a number for c: ");
c = Keyboard.readInt();
average=(a+b+c)/3;
System.out.println ("The average of a,b and c
is " average".");
What am I doing wrong? My class path is right I'm fairly sure. Is it because I'm using different versions of SDK ?
I'm using SDK1.4 beta and SDK1.2.2, At University the cs1.Keyboard package works perfectly but when I downloaded it from the java website it didn't work.... Can you pls tell me the exact website I can get the version I can use to make cs1.Keyboard package work... Thank you. Your help is greatly appreciated.
Cheers, George

Answer 1

The statement "import cs1.Keyboard;" is telling the compiler to find a java package named cs1 and find a class named Keyboard inside that package.
So your system must have a directory named cs1 that contains a file Keyboard.class. The cs1 directory must be in a directory that is in your Classpath.
If you aren't sure about how your Classpath is set or which directory to put the cs1 directory, you can try to put it into the same directory that three_int.java is in. I'm assumng you CD to the directory that contains three_int.java when you try to compile it.