gistfile1.java

interface Bicycle {

  void changeGear(int newValue);

  void speedUp(int increment);

  void applyBrakes(int decrement);
}

public class ACMEBicycle implements Bicycle {
   
   public void changeGear(int newValue) {
     // do some work here
   }
   
   public void speedUp(int increment) {
     // do some work here
   }
   
   public void applyBrakes(int decrement) {
     // do some work here
   }

}