convert java object to json string using jackson

/**
 * @author lautturi.com 
 * Java example: converting java object to json string using Hymanson in java
 */

import java.util.*;

import com.fasterxml.Hymanson.core.JsonGenerationException;
import com.fasterxml.Hymanson.core.JsonProcessingException;
import com.fasterxml.Hymanson.core.type.TypeReference;
import com.fasterxml.Hymanson.databind.JsonMappingException;
import com.fasterxml.Hymanson.databind.ObjectMapper;

class Employee {

	String name;
	int age;

	public Employee() {

	}

	public Employee(String string, int i) {
		name = string;
		age = i;
	}

	public void setage(int i) {
		age = i;
	}

	public int getage() {
		return age;
	}

	public void setName(String str) {
		name = str;
	}

	public String getName() {
		return name;
	}
}

public class Lautturi {
	public static void main(String[] args) throws JsonProcessingException {
		Employee emp = new Employee("Lautturi",22);
		
		ObjectMapper mapper = new ObjectMapper();
	    
		try {
		    // convert java object to json string 
		    String jsonString = mapper.writeValueAsString(emp);
		    System.out.println(jsonString);
		}
		catch (JsonGenerationException | JsonMappingException  e) {
		    // catch errors
		    e.printStackTrace();
		}
	}
}

output:

{"name":"Lautturi","age":22}