Here you can find the source of readModelFromUrl(URL file, Class
public static <T> Optional<T> readModelFromUrl(URL file, Class<T> clazz)
//package com.java2s; /*/*from www. j a v a2 s . com*/ * This file is part of Tangerine, licensed under the MIT License (MIT). * * Copyright (c) 2016, Lexteam <http://www.lexteam.xyz/> * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ import com.google.gson.Gson; import java.io.IOException; import java.io.InputStreamReader; import java.net.URL; import java.util.Optional; public class Main { public static final Gson GSON = new Gson(); public static <T> Optional<T> readModelFromUrl(URL file, Class<T> clazz) { try { return Optional.of(GSON.fromJson(new InputStreamReader(file.openStream()), clazz)); } catch (IOException e) { e.printStackTrace(); } return Optional.empty(); } }