CountryRestService.java

package org.arpit.java2blog.jaxrs;

import java.util.ArrayList;
import java.util.List;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

import org.arpit.java2blog.bean.Country;
/* 
 * author: Arpit Mandliya
 * */
@Path("/countries")
public class CountryRestService {
	
    @GET
    @Produces(MediaType.APPLICATION_JSON)
	public List<Country> getCountries()
	{
		List<Country> listOfCountries = new ArrayList<Country>();
		listOfCountries=createCountryList();
		return listOfCountries;
	}

	@GET
    @Path("{id: \\d+}")
    @Produces(MediaType.APPLICATION_JSON)
	public Country getCountryById(@PathParam("id") int id)
	{
		List<Country> listOfCountries = new ArrayList<Country>();
		listOfCountries=createCountryList();

		for (Country country: listOfCountries) {
			if(country.getId()==id)
				return country;
		}
		
		return null;
	}

// Utiliy method to create country list.
	public List<Country> createCountryList()
	{
		Country indiaCountry=new Country(1, "India");
		Country chinaCountry=new Country(4, "China");
		Country nepalCountry=new Country(3, "Nepal");
		Country bhutanCountry=new Country(2, "Bhutan");

		List<Country> listOfCountries = new ArrayList<Country>();
		listOfCountries.add(indiaCountry);
		listOfCountries.add(chinaCountry);
		listOfCountries.add(nepalCountry);
		listOfCountries.add(bhutanCountry);
		return listOfCountries;
	}
}