Prashant1293

package edu.knoldus.enumeration;

enum Rose {
    RED(true), BLACK(false), WHITE(true), PINK(true), BROWN(false);
    
    private final boolean isAvailable;
    int count = 0;
    
    Rose(boolean isAvailable) {
        System.out.println("Instance " + (++count) + " for constant " + this.name() + " created.");

Prashant1293

package edu.knoldus.enumeration;

enum BoardMaterial {WHITE, BLACK, SHEET}

enum BoardMaterial2 {BLACK}

public class BasicEnumerationDemo {
    
    public static void main(String[] args) {
      

Prashant1293

package edu.knoldus.enumeration;

enum BoardMaterial {WHITE, BLACK, SHEET}

public class BasicEnumerationConcept {
    
    public static void main(String[] args) {
        // create an instance of BoardMaterial enum and assign a value to it.
        BoardMaterial material = BoardMaterial.BLACK;
        System.out.println(material);

Prashant1293

package edu.knoldus.com.handsonspringboot.zipwithblogcontent.controller;

import edu.knoldus.com.handsonspringboot.zipwithblogcontent.repository.BlogRepository;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import reactor.core.publisher.Mono;

Prashant1293

Service A implementation....

private static final ParameterizedTypeReference<
            ResponseEntity<ThirdPartyResponse>> ROUTE =
            new ParameterizedTypeReference<ResponseEntity<ThirdPartyResponse>>() {
            };

private WebClient webClient;

//Method in service A used to invoke the service B using the webclient from spring-boot webflux.

Prashant1293

Service A implementation....

private static final ParameterizedTypeReference<
            ResponseEntity<ThirdPartyResponse>> ROUTE =
            new ParameterizedTypeReference<ResponseEntity<ThirdPartyResponse>>() {
            };

private WebClient webClient;

//Method in service A used to invoke the service B using the webclient from spring-boot webflux.

Prashant1293

/* Let suppose we need to create a class called MySummation, that provides a sum of marks obtained by a student in his annual
examination. Now marks in a subject can be int, float or double. So we need to have a method that can take these types as 
parameters and perform the computation accordingly. */

class MySum<T> {
    T sum; // sum is now of type T which is a parameterized type.
    
    MySum(T totalMarks){
        sum = totalMarks; // Assign sum the value in totalMarks can be a int, double, float etc.
    }

Prashant1293

/* Let suppose we need to create a class called MySummation, that provides a sum of marks obtained by a student in his annual
examination. Now marks in a subject can be int, float or double. So we need to have a method that can take these types as 
parameters and perform the computation accordingly. */

class MySum {
    Object sum; // sum is now of type object
    
    MySum(Object totalMarks){
        sum = totalMarks; // Assign sum the value in totalMarks can be a int, double, float etc.
    }

Prashant1293

@Singleton
public class ErrorHandler extends DefaultHttpErrorHandler {
    
    private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
    
    @Inject
    public ErrorHandler(Config configuration, Environment environment,
                        OptionalSourceMapper sourceMapper, Provider<Router> routes) {
        super(configuration, environment, sourceMapper, routes);
    }

Prashant1293

@Singleton
public class ErrorHandler extends DefaultHttpErrorHandler {
    
    private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
    
    @Inject
    public ErrorHandler(Configuration configuration, Environment environment,
                        OptionalSourceMapper sourceMapper, Provider<Router> routes) {
        super(configuration, environment, sourceMapper, routes);
    }