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/*
* Copyright (C) 2011 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.gson.extras.examples.rawcollections;
import java.util.ArrayList;
import java.util.Collection;
import com.google.gson.Gson;
import com.google.gson.JsonArray;
import com.google.gson.JsonParser;
public class RawCollectionsExample {
static class Event {
private String name;
private String source;
private Event(String name, String source) {
this.name = name;
this.source = source;
}
@Override
public String toString() {
return String.format("(name=%s, source=%s)", name, source);
}
}
@SuppressWarnings({ "unchecked", "rawtypes" })
public static void main(String[] args) {
Gson gson = new Gson();
Collection collection = new ArrayList();
collection.add("hello");
collection.add(5);
collection.add(new Event("GREETINGS", "guest"));
String json = gson.toJson(collection);
System.out.println("Using Gson.toJson() on a raw collection: " + json);
JsonParser parser = new JsonParser();
JsonArray array = parser.parse(json).getAsJsonArray();
String message = gson.fromJson(array.get(0), String.class);
int number = gson.fromJson(array.get(1), int.class);
Event event = gson.fromJson(array.get(2), Event.class);
System.out.printf("Using Gson.fromJson() to get: %s, %d, %s", message, number, event);
}
}
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