.java files located in different directories - trouble compiling

Question

My attempts at getting my main .class file (../master/BicycleMaster.class) to automatically recognize that it's supporting .class file (../master/child/BicycleChild.class) located one directory below keep failing and the .java files won't compile.
If I move both .java files to the same location (in the ../master directory) then they compile and run just fine, but it's when I want to separate them into the two different directories that I have a problem compiling them. They won't compile because the references in BicycleMaster.jave to BicycleChild.java can't be resolved.
I was hoping - if you have time - that you might be able to show me by example in the code below? In the file ../master/BicycleMaster.java I added 'package master;' as the first line of the code. It was my impression that this would tell the compiler to look in the sub-directories for any additional .java files. This didn't work either.
HERE ARE THE DETAILS:
Directory of K:\COMMON\ITS\STEVEB\java\master
03/04/2008 04:25 PM <DIR> .
03/04/2008 04:25 PM <DIR> ..
03/04/2008 04:24 PM 612 BicycleMaster.java
03/04/2008 03:54 PM <DIR> child
1 File(s) 612 bytes
K:\COMMON\ITS\STEVEB\java\master>type BicycleMaster.java
package master;
class BicycleMaster {
    public static void main(String[] args) {
        //Create 2 different bicycle objects
        BicycleChild bike1 = new BicycleChild();
        BicycleChild bike2 = new BicycleChild();
        //Invoke methods on the objects
        bike1.changeCadence(50);
        bike1.speedUp(10);
        bike1.changeGear(2);
        bike1.printStates();
        bike2.changeCadence(50);
        bike2.speedUp(10);
        bike2.changeGear(2);
        bike2.changeCadence(40);
        bike2.speedUp(10);
        bike2.changeGear(3);
        bike2.printStates();
}Directory of K:\COMMON\ITS\STEVEB\java\master\child
03/04/2008 03:54 PM <DIR> .
03/04/2008 03:54 PM <DIR> ..
03/04/2008 03:54 PM 524 BicycleChild.java
1 File(s) 524 bytes
K:\COMMON\ITS\STEVEB\java\master\child>type BicycleChild.java
class BicycleChild {
    int cadence = 0;
    int speed = 0;
    int gear = 1;
    void changeCadence(int NewValue) {
        cadence = NewValue;
    void changeGear(int NewValue) {
        gear = NewValue;
    void speedUp(int increment) {
        speed = speed + increment;
    void applyBrakes(int decrement) {
        speed = speed - decrement;
    void printStates() {
        System.out.println("Your cadence: "+cadence+", Your speed: "+speed+", Your gear: "+gear);
}HERE ARE THE ERRORS:
First I compile the ../master/child/BicycleChild.java file and it compiles fine. This I attempt to compile ../master/BicycleMaster.java and I get the following errors:
K:\COMMON\ITS\STEVEB\java\master>javac BicycleMaster.java
BicycleMaster.java:5: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike1 = new BicycleChild();
^
BicycleMaster.java:5: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike1 = new BicycleChild();
^
BicycleMaster.java:6: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike2 = new BicycleChild();
^
BicycleMaster.java:6: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike2 = new BicycleChild();
^
4 errors

Answer 1

Thanks so much for responding. Progress was definetly made as the compiler now works longer before erroring out. Sadly it's still erroring out for a reason I'm not understanding. Please let me know if you can see where I'm going wrong.
Here's how it played out for me:
K:\COMMON\ITS\STEVEB\java>echo %classpath%
.;k:\common\its\steveb\java\;C:\Program Files\Java\jre1.6.0_04\lib\ext\QTJava.zip
K:\COMMON\ITS\STEVEB\java\master\child>javac BicycleChild.java
K:\COMMON\ITS\STEVEB\java\master\child>cd ..
K:\COMMON\ITS\STEVEB\java\master>javac BicycleMaster.java
BicycleMaster.java:5: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike1 = new BicycleChild();
^
BicycleMaster.java:5: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike1 = new BicycleChild();
^
BicycleMaster.java:6: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike2 = new BicycleChild();
^
BicycleMaster.java:6: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike2 = new BicycleChild();
^
4 errors
Here are the two programs revised as you suggested:
K:\COMMON\ITS\STEVEB\java\master\child>type BicycleChild.java
package master.child;
class BicycleChild {
    int cadence = 0;
    int speed = 0;
    int gear = 1;
    void changeCadence(int NewValue) {
        cadence = NewValue;
    void changeGear(int NewValue) {
        gear = NewValue;
    void speedUp(int increment) {
        speed = speed + increment;
    void applyBrakes(int decrement) {
        speed = speed - decrement;
    void printStates() {
        System.out.println("Your cadence: "+cadence+", Your speed: "+speed+", Your gear: "+gear);
}K:\COMMON\ITS\STEVEB\java\master>type BicycleMaster.java
package master;
class BicycleMaster {
    public static void main(String[] args) {
        //Create 2 different bicycle objects
        BicycleChild bike1 = new BicycleChild();
        BicycleChild bike2 = new BicycleChild();
        //Invoke methods on the objects
        bike1.changeCadence(50);
        bike1.speedUp(10);
        bike1.changeGear(2);
        bike1.printStates();
        bike2.changeCadence(50);
        bike2.speedUp(10);
        bike2.changeGear(2);
        bike2.changeCadence(40);
        bike2.speedUp(10);
        bike2.changeGear(3);
        bike2.printStates();
}