Java tutorial
//package com.java2s; /* * Copyright (c) 2016, WSO2 Inc. (http://wso2.com) All Rights Reserved. * <p> * WSO2 Inc. licenses this file to you 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 * <p> * http://www.apache.org/licenses/LICENSE-2.0 * <p> * 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 java.io.PushbackInputStream; public class Main { public static final int BOM_SIZE = 4; /** * Convenience method to get a PushbackInputStream so that we can read the BOM * * @param is a regular InputStream * @return a PushbackInputStream wrapping the passed one */ public static PushbackInputStream getPushbackInputStream(InputStream is) { return new PushbackInputStream(is, BOM_SIZE); } }