How to order JSON elements using Jackson annotations?

package com.java2novice.json.models;

import org.codehaus.jackson.annotate.JsonProperty;
import org.codehaus.jackson.annotate.JsonPropertyOrder;

@JsonPropertyOrder({ "emp_id", "emp_name", "emp_designation", "department", "salary" })
public class Employee {

	@JsonProperty("emp_id")
	private int empId;
	
	@JsonProperty("emp_name")
	private String name;
	
	@JsonProperty("emp_designation")
	private String designation;
	
	private String department;
	
	private int salary;
	
	public String toString(){
		StringBuilder sb = new StringBuilder();
		sb.append("************************************");
		sb.append("\nempId: ").append(empId);
		sb.append("\nname: ").append(name);
		sb.append("\ndesignation: ").append(designation);
		sb.append("\n************************************");
		return sb.toString();
	}
	
	public int getEmpId() {
		return empId;
	}
	public void setEmpId(int empId) {
		this.empId = empId;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getDesignation() {
		return designation;
	}
	public void setDesignation(String designation) {
		this.designation = designation;
	}
	public String getDepartment() {
		return department;
	}
	public void setDepartment(String department) {
		this.department = department;
	}
	public int getSalary() {
		return salary;
	}
	public void setSalary(int salary) {
		this.salary = salary;
	}
}