Here you can find the source of getJAXBContext(Class clazz)
private static JAXBContext getJAXBContext(Class<?> clazz) throws Exception
//package com.java2s; /**/*w w w. java 2 s . c om*/ * The MIT License * Copyright (c) 2015 Estonian Information System Authority (RIA), Population Register Centre (VRK) * * 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 javax.xml.bind.JAXBContext; import java.util.HashMap; import java.util.Map; public class Main { private static final Map<Class<?>, JAXBContext> CTX_CACHE = new HashMap<>(); private static JAXBContext getJAXBContext(Class<?> clazz) throws Exception { if (CTX_CACHE.containsKey(clazz)) { return CTX_CACHE.get(clazz); } else { JAXBContext ctx = JAXBContext.newInstance(clazz); CTX_CACHE.put(clazz, ctx); return ctx; } } }