</How to hire>
Rest API Developer
API stands for “application program interface.” It’s a documented method of interacting with someone else’s service. REST stands for representational state transfer. REST is just a pattern for making APIs. It’s a standard pattern for naming resources that a service provides.
Used for hiring
API Developers
RESTful web Developers
Skills required
Object-oriented programming and Java
Design patterns
API integration
RESTful API assessment
If you want to work with REST API candidates, you need to assess their skills on J2EE and API development. A fair understanding of web development, HTML, and frameworks is required.
You can assess a REST API developer on the following skills-
- Understanding of an MVC framework such as Spring/Play.
- Understanding of HTTP protocol (method/response codes), REST/RESTful web services, SOAP (optional)
- Understanding of JSON or XML or protocol buffers
- Basics of validation framework
- Any good persistence framework like Spring/Hibernate
How this test helps with hiring REST candidates
Steps to assess REST developers
Create a test
Add questions to assess REST skills
Send invites to candidates
Evaluate the report
Common types of assessments used by our top customers
Programming question to assess development skills
basic Java skills and programming skills
HTML
Sample questions
What is the error in the following Rest API code:
"@Path(""/product"")
public class prod {
@POST @Path(""..."") public Response add( @FormParam(""id"") int id, @FormParam(""nm"") String name, @FormParam(""prc"") float price) { return Response.status(200) .entity("" Result is successful!"") .build(); } } "
- Class cannot be executedCorrect Answer
- Error in the return statement
- No error
- "@POST" cannot be defined
Which of these options will complete the line A in the following lines of code:
"public class task extends AsyncTask<string,string,string>{ protected String doInBackground(String... params) { HttpURLConnection connection=null; BufferedReader reader; try { URL url = new URL(params[0]); connection = (HttpURLConnection) url.openConnection(); connection.connect(); InputStream stream = ......; /**Line A**/ reader = new BufferedReader(new InputStreamReader(stream)); ..... }"
- Compilation error
- connection.Inputstream()
- connection.getInputStream()Correct Answer
- HttpURLConnection.setConnection()
What is the error in the following web service code:
" ....... AsyncTask.execute(new Runnable() { @Override public void run() { ..... URL Endpoint = new URL(""https://api.github.com/""); HttpsURLConnection myConnection = (HttpsURLConnection) Endpoint.Connection(); } }); ......"
- Endpoint.openStream()
- No error
- AsyncTask is executed incorrectly
- Endpoint.openConnection()Correct Answer
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