Here you can find the source of unmarshal(InputStream in, Class... boundClasses)
public static <T> T unmarshal(InputStream in, Class... boundClasses)
//package com.java2s; /*// w w w . j av a2 s . co m * Copyright 2009-2016 Andrey Grigorov * * 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. */ import java.io.InputStream; import javax.xml.bind.JAXBContext; import javax.xml.bind.Unmarshaller; public class Main { public static <T> T unmarshal(InputStream in, Class... boundClasses) { try { Unmarshaller u = JAXBContext.newInstance(boundClasses).createUnmarshaller(); return (T) u.unmarshal(in); } catch (Exception ex) { } return null; } }