What is interface
Answer: An interface is a group of related methods with empty bodies. Example:
package com.javahonk.interfacetest; public interface CarInterface { public void changeGear(int newValue); public void speedUp(int increment); public void applyBrakes(int decrement); }
Any class who implements this interface name would change to a particular brand and add their own specification. Also you have to use implements keyword in the class declaration:
package com.javahonk.interfacetest; public class Toyota implements CarInterface{ public static void main(String[] args) { } @Override public void changeGear(int newValue) { // TODO Auto-generated method stub } @Override public void speedUp(int increment) { // TODO Auto-generated method stub } @Override public void applyBrakes(int decrement) { // TODO Auto-generated method stub } }
