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package com.hmkcode;

import java.lang.reflect.Type;

import java.util.LinkedList;

import java.util.List;

import com.google.gson.Gson;

import com.google.gson.reflect.TypeToken;

import com.hmkcode.vo.Article;

public class App

{

public static void main( String[] args )

{

Gson gson = new Gson();

List<Article> articles = new LinkedList<Article>();

articles.add(createArticle());

articles.add(createArticle());

// Java --> JSON

String json = gson.toJson(articles);

System.out.println("toJson: "+json);

// JSON --> Java

List list = gson.fromJson(json, List.class);

System.out.println("fromJson: "+list);

System.out.println("Class Type: "+list.get(0).getClass());

// JSON --> Java "Get the actual type"

Type type = new TypeToken<List<Article>>(){}.getType();

list = gson.fromJson(json, type);

System.out.println("fromJson: "+list);

System.out.println("Class Type: "+list.get(0).getClass());

}

private static Article createArticle(){

Article article = new Article();

article.setTitle("GSON - Java JSON Library");

article.setUrl("http://hmkcode.com/gson-json-java");

article.addCategory("Java");

article.addTag("Java");

article.addTag("GSON");

article.addTag("JSON");

return article;

}

}