Java FileInputStream Read readFile(File file)

Description

read File

License

Apache License

Declaration

public static byte[] readFile(File file) throws IOException 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright 2015 DANS - Data Archiving and Networked Services
 *
 * 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
 *  // w  ww  . j a va2s .  c  o m
 * 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.File;
import java.io.FileInputStream;

import java.io.IOException;
import java.io.InputStream;

public class Main {
    public static byte[] readFile(File file) throws IOException {
        byte[] bytes = null;
        InputStream inStream = null;
        long length = file.length();
        try {
            inStream = new FileInputStream(file);
            if (length > Integer.MAX_VALUE) {
                throw new IOException("File too long " + file.getName());
            }
            bytes = new byte[(int) length];
            int offset = 0;
            int numRead = 0;
            while (offset < bytes.length && (numRead = inStream.read(bytes, offset, bytes.length - offset)) >= 0) {
                offset += numRead;
            }
            if (offset < bytes.length) {
                throw new IOException("Could not completely read file " + file.getName());
            }
        } finally {
            if (inStream != null) {
                inStream.close();
            }
        }
        return bytes;
    }
}

Related

1. readFile(File file)
2. readFile(File file)
3. readFile(File file)
4. readFile(File file)
5. readFile(File file)
6. readFile(File file)
7. readFile(File file)
8. readFile(File file)
9. readFile(File file)