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