How to convert Map to JSON string using Jackson API?

package com.java2novice.json.examples;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import org.codehaus.jackson.map.ObjectMapper;

public class MapToJsonEx {

	public static void main(String a[]){
		
		ObjectMapper mapperObj = new ObjectMapper();
		Map<String, String> inputMap = new HashMap<String, String>();
		inputMap.put("name", "Java2Novice");
		inputMap.put("site", "http://java2novice.com");
		// convert map to JSON String
		try {
			String jsonResp = mapperObj.writeValueAsString(inputMap);
			System.out.println(jsonResp);
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}

{"site":"http://java2novice.com","name":"Java2Novice"}