Interface

 package com.company;

interface  Bicycle{
    int a=45;            //in interface we can give the properties in interfaces and that is final
    void applyBrake(int decrement);
    void speedUp(int increment);/*this interface will give the force to that class to implement all the method
    if we implement the bicycle so we should implement applyBrake and speedUP
    */
}
interface HornBicycle{
    void blowhornkk();
    void blowhorndd();
}
class AvonCycle implements Bicycle,HornBicycle{//here we can use the two interfaces in same class where in abstract class cannot
    int b=10;
    void blowHorn(){
        System.out.println("pee pee");
    }
    public void applyBrake(int decrement){
        System.out.println("applying brake ");
    }
    public void speedUp(int increment){
        System.out.println("applying speedUp");
    }
    public void blowhornkk(){
        System.out.println("Kabhi khushi kabhi gumm pee pee ");
    }
    public void blowhorndd(){
        System.out.println("Mai hoon naa po po  ");
    }
}
public class interfaces {
    public static void main(String[] args) {
     AvonCycle cycle=new AvonCycle();
     cycle.applyBrake(1);
//        System.out.println(cycle.a); --Correct
        cycle.blowHorn();
        cycle.blowhorndd();
        cycle.blowhornkk();
        cycle.speedUp(100);
//        cycle.b=100;
//        System.out.println(cycle.b);but here we can modify in the another class
//        cycle.a=15; --X Error you cannot modify  the properties interface as they are final
    }
}

//o/p

45
pee pee
Mai hoon naa po po  
Kabhi khushi kabhi gumm pee pee 
applying speedUp