Third way is to create a java util hash map and paste name email programme etc as key value pairs to it. Then create an array list of course and put key as “course” and the list as value to that map and then we put this map as body to rest post request to add data to our app.

package postreqarray;

import static io.restassured.RestAssured.given;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.testng.annotations.Test;
import io.restassured.RestAssured;
import io.restassured.http.ContentType;
import io.restassured.response.Response;

public class PostReqMapExample {

@Test
public void test001() {

RestAssured.baseURI = "http://localhost";
RestAssured.port = 8080;
RestAssured.basePath = "/student";

Map<String, Object> map = new HashMap<String, Object>();
map.put("firstName", "Harry");
map.put("lastName", "Singh");
map.put("email", "sdfsfddhh@gmail.com");
map.put("programme", "Computer science");

List<String> list = new ArrayList<String>();
list.add("java");
list.add("c");
list.add("c++");

map.put("courses", list);
Response resp = given().contentType(ContentType.JSON).log().body().body(map).post();
resp.prettyPrint();
 }
}