Java tutorial
/*** Copyright (c) 2012 CommonsWare, LLC 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.commonsware.empub; import java.util.HashMap; import org.json.JSONArray; import org.json.JSONObject; public class BookContents { JSONObject raw = null; HashMap<String, Integer> files = new HashMap<String, Integer>(); JSONArray chapters; BookContents(JSONObject raw) { this.raw = raw; chapters = raw.optJSONArray("chapters"); for (int i = 0; i < getChapterCount(); i++) { files.put(getChapterFile(i), i); } } int getChapterCount() { return (chapters.length()); } String getChapterFile(int position) { JSONObject chapter = chapters.optJSONObject(position); return (chapter.optString("file")); } String getChapterTitle(int position) { JSONObject chapter = chapters.optJSONObject(position); String result = chapter.optString("title"); if (result == null) { result = String.valueOf(position + 1); } return (result); } int getPositionForFile(String file) { return (files.get(file.substring(5))); } String getTOCFile() { return (raw.optString("toc")); } String getCoverImage() { return (raw.optString("cover")); } String getTitle() { return (raw.optString("title")); } }