Creating an Interface for a class: error

Question

Hi there,
I'm new to Java as you'll see from the question.
I created a class "Bicycle" and then went on to create an interface for it "InterBicycle" only I get the following error:
bad class file: C:\Documents and Settings\Melanie\Bicycle\src\bicycle\InterBicycle.java
file does not contain class bicycle.InterBicycle
I checked in the bicycle folder and the "InterBicycle.java" file is there.
Does anyone know where I am going wrong?
Butterfly82

Answer 1

Hey, thank you for that petes.
Silly mistake on my part, I was just reading about Inheritance and then went on to reading about Interfaces.
Changing this I came up with another error for each of the methods implemented by Bicycle.java:
C:\... applyBreaks(int) in bicycle.Bicycle cannot implement applyBreaks(int) in bicycle.InterBicycle; attempting to assign weaker access privileges; was public
Here is the code I have (Taken from The java Tutorial):
package bicycle;
class Bicycle implements InterBicycle {
    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 applyBreaks(int decrement) {
        speed = speed - decrement;
    void printStates() {
        System.out.println("Cadence: " +cadence+ " Speed: " +speed+ " Gear: " +gear);
package bicycle;
interface InterBicycle {
    // List of the methods that the Bicycle class holds/implements
    void changeCadence(int newValue);
    void changeGear(int newValue);
    void speedUp(int increment);
    void applyBreaks(int decrement);
}