关于json嵌套解析

{   
   "fullname": "Sean Kelly",   
   "org": "SK Consulting",   
   "emailaddrs": [   
      {"type": "work", "value": "kelly@seankelly.biz"},   
      {"type": "home", "pref": 1, "value": "kelly@seankelly.tv"}   
   ],   
    "telephones": [   
      {"type": "work", "pref": 1, "value": "+1 214 555 1212"},   
      {"type": "fax", "value": "+1 214 555 1213"},   
      {"type": "mobile", "value": "+1 214 555 1214"}   
   ],   
   "addresses": [   
      {"type": "work", "format": "us",   
       "value": "1234 Main StnSpringfield, TX 78080-1216"},   
      {"type": "home", "format": "us",   
       "value": "5678 Main StnSpringfield, TX 78080-1316"}   
   ],   
    "urls": [   
      {"type": "work", "value": "http://seankelly.biz/"},   
      {"type": "home", "value": "http://seankelly.tv/"}   
   ]   
} 

package jsonparsingtest;
 
import java.util.ArrayList;
import java.util.List;
 
import org.codehaus.jackson.map.ObjectMapper;
 
public class JsonParsingTest {
 
	public static class Person {
		private String fullname = null;
		private String org = null;
		private List
 emailaddrs = new ArrayList
();
		private List
 telephones = new ArrayList
();
		private List
 addresses = new ArrayList
();
		private List
 urls = new ArrayList
();
		public String getFullname() {
			return fullname;
		}
		public void setFullname(String fullname) {
			this.fullname = fullname;
		}
		public String getOrg() {
			return org;
		}
		public void setOrg(String org) {
			this.org = org;
		}
		public List
 getEmailaddrs() {
			return emailaddrs;
		}
		public void setEmailaddrs(List
 emailaddrs) {
			this.emailaddrs = emailaddrs;
		}
		public List
 getTelephones() {
			return telephones;
		}
		public void setTelephones(List
 telephones) {
			this.telephones = telephones;
		}
		public List
 getAddresses() {
			return addresses;
		}
		public void setAddresses(List
 addresses) {
			this.addresses = addresses;
		}
		public List
 getUrls() {
			return urls;
		}
		public void setUrls(List
 urls) {
			this.urls = urls;
		}
	}
	public static class Address {
		private String type = null;
		private String value = null;
		private String format = null;
		private int pref = 0;
		public String getType() {
			return type;
		}
		public void setType(String type) {
			this.type = type;
		}
		public String getValue() {
			return value;
		}
		public void setValue(String value) {
			this.value = value;
		}
		public String getFormat() {
			return format;
		}
		public void setFormat(String format) {
			this.format = format;
		}
		public int getPref() {
			return pref;
		}
		public void setPref(int pref) {
			this.pref = pref;
		}
	}
	public static void main(String[] args) throws Exception {
		ObjectMapper om = new ObjectMapper();
		// 对象就在这里读取。
		Person person = om.readValue(System.in, Person.class);
		// 怎么用，随便。
		System.out.println(person.getFullname());
		System.out.println(person.getEmailaddrs().get(0).getValue());
	}
}