In this short code example I am going to share with you how to concatenate two ArrayList in Java. Concatenate ArrayList using addAll() function Let’s say we have these two ArrayList(s): List<String> itemsList1 = new ArrayList(Arrays.asList(“One”, “Two”)); List<String> itemsList2 = new ArrayList(Arrays.asList(“Three”, “Four”)); To concatenate the two lists together we can create a new ArrayList, and…Read More Concatenate Two ArrayList in Java
When writing a JUnit test there are different ways to test for expected exception and below I am going to share with you three different ways. Using @Test Expected Attribute One way to test for expected exceptions is to use the @Test’s expected attribute to specify that the method below should throw an exception specified by…Read More JUnit Test Expected Exception Example
With this short blog post I am going to share with you how to create XML document using Java. Often we need to send HTTP Post request that contains JSON or XML payload. Earlier I have shared a blog post on different ways to create JSON Payload by converting Java objects into JSON. Below is…Read More Create XML Document in Java
Earlier I have shared a series of video tutorials on how to create user Login and Registration pages for your mobile application that communicates with a server side php scripts…
The post User Registration, Sign in And Token Based Authentication appeared first on Swift Developer Blog.Read More User Registration, Sign in And Token Based Authentication
In this blog post we will implement Token-base authentication and will learn how to use Access Token we have created in a previous blog post to communicate with Web Service endpoints which require user to be a registered user with our mobile application. If you have not followed the previous two blog posts then it…Read More Token-based Authentication Example
It time to learn how to create a Web Service to authenticate user with their user name and password and how to issue a unique secure access token which our Mobile Application can use to send HTTP requests and communicate with protected web services of our API. For a free video tutorial on how to…Read More RESTful Web Service to Authenticate User and Issue Access Token
Hi guys! Just wanted to share with you a new blog post and that I am about to publish a series of blog posts + videos on How to build…
The post RESTful Web Services with Java for your Swift Mobile Application appeared first on Swift Developer Blog.Read More RESTful Web Services with Java for your Swift Mobile Application
In this blog post I am going to share with you a way to create a RESTful Web Service to: Create a new user profile, Generate and save in database a user secure user password rather than an actual password provided by user, Return back as a response a custom user profile object(JSON) with information that…Read More RESTful Web Service to Save a New User in Database
With Mockito we can Mock an object, stub some of it’s methods but not the other and still be able to call a real method of this stubbed object. In the code example below I am going to share with you how to call a real method of a mocked object using Mockito’s thenCallRealMethod(). In…Read More Use Mockito’s thenCallRealMethod() to Call a Real Method
Hibernate is a great framework to use to persist data into a database when building RESTful Web Services for your mobile application with Jersey and JAX-RS. In most of the projects I have participated when designing RESTful Web Services for Mobile App we used MySQL database server and Hibernate framework to store user data which…Read More Persist Java Object in MySQL Database With Hibernate
If one of you RESTful Web Service Endpoints built with Jersey JAX-RS needs to initiate image download, you can use the following example to let user download an image stored on your server when they access a certain web service end point. The below example downloads a PNG image specified by @Produces(“image/png”) but you can easily…Read More Image Download in Jersey JAX-RS
We can use @HeaderParam annotation to read the Request HTTP Headers when building RESTFul Web Services. And knowing how to use @PathParam and @QueryParam annotations, the use of @HeaderParam annotation becomes very obvious. We just use it the same way as we use the @QueryParam for example. JAX-RS @HeaderParam Annotation Code Example. JAX-RS gives us a couple of ways to…Read More JAX-RS @HeaderParam. Reading Request Headers.
Earlier I have shared with you how to use JAX-RS to access HTTP GET Request and how extract URI Query Parameters and how to read Path Parameters. In this blog post I am going to share with you how to handle HTTP POST request and how to read the content of HTTP Request Body as…Read More Jersey HTTP Post Example
@QueryParam annotation allows us to read the request parameter values which were passed as a part of URL query string for example: site.com/api/users/r4ghtaf43c3n/messages?start=1&limit=50 where site.com is your web site domain name, /api/users/ is the path to your Root Resource, r4ghtaf43c3n is the value of specific user id and can be read with @ParthParam annotation, /messages is…Read More JAX-RS @QueryParam. Reading URL Query Parameters.
In this blog post I am going to share with you how to read the PathParam value which was included in the request URI. And before you continue further I would like to mention that I have recorded a video lesson on how to use the @PathParam annotation and made it part of my video…Read More JAX-RS @PathParam. Reading Path Parameters.