rudrakshbhati

    private static CompletableFuture<String> futureCall1(){
        return CompletableFuture.supplyAsync(() -> {
            try {
                Thread.sleep(1000);
            } catch (Exception e) {
                System.out.print("exception occurred");
            }
            return "Hello";
        });
    }

rudrakshbhati

private static void chainingExample(){
        CompletableFuture<String> completableFuture
                = CompletableFuture.supplyAsync(() -> "Hello ")
                .thenCompose(s -> CompletableFuture.supplyAsync(() -> s + "My "))
                .thenCompose(s -> CompletableFuture.supplyAsync(() -> s + "Friend"));
        try {
            System.out.print(completableFuture.get());
        } catch (Exception e) {
            System.out.print("exception occurred");
        }

rudrakshbhati

I am in Bike implementation of vehicle

rudrakshbhati

public class Car implements Vehicle {

    public void drive() {
        System.out.println("I am in Car implementation of vehicle");

    }
}

rudrakshbhati

public interface Vehicle {

    public void drive();
}

rudrakshbhati

import com.google.inject.AbstractModule;

public class VehicleShoppingModule extends AbstractModule {
        @Override
        protected void configure() {
            bind(Vehicle.class).to(Bike.class);
        }
    }

rudrakshbhati

import com.google.inject.Guice;
import com.google.inject.Injector;

public class Main {

    public static void main(String[] args) {
        Injector injector = Guice.createInjector(new VehicleShoppingModule());
        VehicleShopping vehicleShopping = injector.getInstance(VehicleShopping.class);
        vehicleShopping.testDrive();
    }

rudrakshbhati

public class Bike implements Vehicle {

    public void drive() {
        System.out.println("I am in Bike implementation of vehicle");

    }
}

rudrakshbhati

import com.google.inject.Inject;

public class VehicleShopping {

    private Vehicle vehicle;

    @Inject
    public VehicleShopping(Vehicle vehicle) {
        this.vehicle = vehicle;
    }