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Thankful Tuatara answered on May 21, 2020 Popularity 10/10 Helpfulness 2/10

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1) REQUEST
2) RESPONSE
When we send request, we need to know the API
methods/endpoints that are available:
		- read documentation about API methods.
		- Swagger tool, that has API methods and descriptions
simple endpoint:
		…school.com/api/students
Types of Requests:
	GET -> Read data
	POST -> Create/insert data
	PUT -> Update data
	DELETE-> Delete data
I send GET, POST, PUT, DELETE type of API requests to
API endpoint/method and get response.
ORDS (oracle data service) API -> HR Database
ORDS API has methods that we can send request to, and it sends
response with Data from HR database.

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Contributed on Dec 04 2020

Thankful Tuatara

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157

Let's break it into two components:

1) RESTful
2) API
An API is an interface through which one program or web site talks to another.
They are used to share data and services, and they come in many different
formats and types.

A RESTful API is one of the many possible ways that programs, servers, 
and web sites can share data and services. REST (Representational State Transfer
) describes the general rules for how the data and services are represented 
through the API so that other programs will be able to correctly request and 
receive the data and services that an API makes available

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Contributed on May 21 2020

Wandering Wolf

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rest api

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Representational state transfer is a software architectural style that defines
a set of constraints to be used for creating Web services.

Web services that conform to the REST architectural style, called RESTful Web
services, provide interoperability between computer systems on the internet

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Contributed on Aug 10 2020

Fylls

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rest api

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Rest API:
Why we use Rest Api?

Front-End Technoligies can not directly connect with database so we use rest api to connect them.
We make rest apis and can use it with any front-end technology like angular, vuejs and also can use with 
android applications.

In MVC we use frontend direct in backend so no need of rest apis.

An API basically work as third party that interacts two systems/languages.
Representational State Transfer (REST) is a architectural style in which we request and get response from server 
in json, xml formats.We use JSon format most.

REST API uses HTTP methods for communication between both client and server side and most of us are familiar 
with the HTTP verbs such as GET, POST, PUT or DELETE.

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Contributed on Jan 14 2023

Bilal Ahmad

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REST (Representational State Transfer) is an architectural style for designing networked applications. It defines a set of principles and constraints that enable the development of scalable and efficient web services. A REST API (Application Programming Interface) is an implementation of a web service that adheres to the principles of REST.

RESTful APIs are widely used for building web services and are commonly used in client-server communication over HTTP. They are platform-independent, language-agnostic, and can be consumed by various clients, including web browsers, mobile apps, or other servers.

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Contributed on May 28 2023

Gorgeous Goldfinch

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What is RESTFul APIs?

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Web services that use REST architecture are called RESTful

services.

▪ RESTful systems communicates over HTTP protocol with HTTP

methods used by Web Browsers to transfer pages.

▪ Richardson Maturity Model

Leonard Richardson proposed the Richardson Maturity Model for

web APIs:

▪ Level 0: Define one URI, and all operations are POST requests to

this URI.

▪ Level 1: Create separate URIs for individual resources.

▪ Level 2: Use HTTP methods to define operations on resources.

▪ Level 3: Use hypermedia

https://www.redhat.com/en/topics/api/what-is-a-rest-api

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Contributed on Feb 02 2023

Anjali Sharma

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what is rest api

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Rest Api = Representational state transfer

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Contributed on Jul 21 2023

Magnificent Moose

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Resteasy REST API

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-1

package com.howtodoinjava.rest;
 
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.core.Response;
 
import org.jboss.resteasy.spi.validation.ValidateRequest;
 
import com.howtodoinjava.exception.MyApplicationException;
 
@Path("/rest")
public class UserService 
{
  @Path("/users/{id}")
  @GET
  @ValidateRequest
  public Response getUserBId  ( @PathParam("id") String id ) throws MyApplicationException
  {
    //validate mandatory field
    if(id == null)
    {
      throw new MyApplicationException("id is not present in request !!");
    }
    //Validate proper format
    try
    {
      Integer.parseInt(id);
    }
    catch(NumberFormatException e)
    {
      throw new MyApplicationException("id is not a number !!");
    }
    //Process the request
    return Response.ok().entity("User with ID " + id + " found !!").build();
  }
}

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Contributed on Dec 30 2022

Deepika Sahu

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