Unable to find symbol: CallBack

[rbradleyjr]

I am new to Java. I am getting the error message "unable to find symbol: CallBack" when I try to run this code. I am being introduced to "interfaces".



class Client implements Callback {
// implements Callback's interface
public void Callback( int p ) {
System.out.println( "Callback called with " + p );
}

void nonIfaceMeth() {
System.out.println( "Classes that implement interfaces " +
"may also define other members, too" );
}
}

class TestIface {
public static void main( String args[] ) {
Callback c = new Client();
c.callback( 42 );
}
}

[doWhile]

What is callback? Did you import it?

[rbradleyjr]

Sorry. New to Java. I forgot to create the callback.java interface file.
I'm also working in Netbeans.
Just one of hundreds of mistakes to come. ;-)