Java FileInputStream Read readFile(File file)

Description

Read a file fully into a new byte array.

License

Open Source License

Parameter

Parameter	Description
file	the file to read

Exception

Parameter	Description
IOException	an exception

Return

the byte array

Declaration

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

Method Source Code

//package com.java2s;
/*//  w  ww  .  j  ava  2  s .  com
 * Copyright 2010 Google Inc. All Rights Reserved.
 *
 * 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.File;
import java.io.FileInputStream;

import java.io.IOException;

public class Main {
    /**
     * Read a file fully into a new byte array.
     * @param file the file to read
     * @return the byte array
     * @throws IOException
     */
    public static byte[] readFile(File file) throws IOException {
        int length = (int) file.length();
        byte[] b = new byte[length];

        FileInputStream fis = null;
        try {
            fis = new FileInputStream(file);
            while (length > 0) {
                length -= fis.read(b, b.length - length, length);
            }
            return b;
        } finally {
            fis.close();
        }
    }
}

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, boolean compress)