com.javacreed.examples.gson.part4.Main.java Source code

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Here is the source code for com.javacreed.examples.gson.part4.Main.java

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/**
 * Copyright 2012-2014 Java Creed.
 * 
 * Licensed under the Apache License, Version 2.0 (the "<em>License</em>");
 * 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.javacreed.examples.gson.part4;

import java.io.IOException;
import java.util.Arrays;
import java.util.List;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.reflect.TypeToken;

public class Main {
    public static void main(final String[] args) throws IOException {

        final Class<?> type = new TypeToken<List<A>>() {
        }.getRawType();

        // Configure GSON
        final DataTypeAdapterFactory.Builder dtafBuilder = new DataTypeAdapterFactory.Builder();
        dtafBuilder.add(A.class, new ATypeAdapter());
        dtafBuilder.add(type, new ListATypeAdapter());

        final GsonBuilder gsonBuilder = new GsonBuilder();
        gsonBuilder.registerTypeAdapterFactory(dtafBuilder.build());
        gsonBuilder.setPrettyPrinting();

        final Gson gson = gsonBuilder.create();

        final List<B> list = Arrays.asList(new B());

        final String json = gson.toJson(list, type);
        System.out.println(json);
    }
}