Java tutorial
//package com.java2s; /** * Copyright 2005-2010 Noelios Technologies. * * The contents of this file are subject to the terms of one of the following * open source licenses: LGPL 3.0 or LGPL 2.1 or CDDL 1.0 or EPL 1.0 (the * "Licenses"). You can select the license that you prefer but you may not use * this file except in compliance with one of these Licenses. * * You can obtain a copy of the LGPL 3.0 license at * http://www.opensource.org/licenses/lgpl-3.0.html * * You can obtain a copy of the LGPL 2.1 license at * http://www.opensource.org/licenses/lgpl-2.1.php * * You can obtain a copy of the CDDL 1.0 license at * http://www.opensource.org/licenses/cddl1.php * * You can obtain a copy of the EPL 1.0 license at * http://www.opensource.org/licenses/eclipse-1.0.php * * See the Licenses for the specific language governing permissions and * limitations under the Licenses. * * Alternatively, you can obtain a royalty free commercial license with less * limitations, transferable or non-transferable, directly at * http://www.noelios.com/products/restlet-engine * * Restlet is a registered trademark of Noelios Technologies. */ import java.io.IOException; import java.io.InputStream; public class Main { /** * Exhaust the content of the representation by reading it and silently * discarding anything read. * * @param input * The input stream to exhaust. * @return The number of bytes consumed or -1 if unknown. */ public static long exhaust(InputStream input) throws IOException { long result = -1L; if (input != null) { byte[] buf = new byte[2048]; int read = input.read(buf); result = (read == -1) ? -1 : 0; while (read != -1) { result += read; read = input.read(buf); } } return result; } }