Java InputStream Read getInputStreamLength(InputStream in)

Description

Get InputStream bytes count without reading

License

Apache License

Parameter

Parameter	Description
in	a parameter

Exception

Parameter	Description
IOException	an exception

Declaration

public static long getInputStreamLength(InputStream in) throws IOException 

Method Source Code

//package com.java2s;
/*/*  www.  j a  v a 2  s . c o  m*/
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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
 *
 *     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.*;

public class Main {
    /**
     * Get InputStream bytes count without reading
     *
     * @param in
     * @return
     * @throws IOException
     */
    public static long getInputStreamLength(InputStream in) throws IOException {
        if (in instanceof FileInputStream) {
            return ((FileInputStream) in).getChannel().size();
        }
        return in.available();
    }
}

Related

1. getInputStreamFromAbsolutePath(String resource)
2. getInputStreamFromClassPath(String filename)
3. getInputStreamFromFile(File pFile)
4. getInputStreamFromFile(final File file)
5. getInputStreamFromZip(ZipInputStream zis, String filename)
6. getInputStreamReader(InputStream in, String charset)
7. getInputStreamReaderAsResource(Class clazz, String fileName)
8. getInputStreamString(final InputStream in)
9. getInputStreamToBytes(InputStream is)