Java FileInputStream Read readFile(String filename)

Description

read File

License

Apache License

Declaration

public static byte[] readFile(String filename) throws IOException 

Method Source Code

//package com.java2s;
/*//w ww. j  a v  a 2  s  . co m
 *  Copyright 2006-2015 WebPKI.org (http://webpki.org).
 *
 *  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.IOException;
import java.io.InputStream;
import java.io.File;
import java.io.FileInputStream;

import java.io.ByteArrayOutputStream;

public class Main {
    public static byte[] readFile(File file) throws IOException {
        return getByteArrayFromInputStream(new FileInputStream(file));
    }

    public static byte[] readFile(String filename) throws IOException {
        return readFile(new File(filename));
    }

    public static byte[] getByteArrayFromInputStream(InputStream is) throws IOException {
        ByteArrayOutputStream baos = new ByteArrayOutputStream(10000);
        byte[] buffer = new byte[10000];
        int bytes;
        while ((bytes = is.read(buffer)) != -1) {
            baos.write(buffer, 0, bytes);
        }
        is.close();
        return baos.toByteArray();
    }
}

Related

1. readFile(String file)
2. readFile(String file)
3. readFile(String file)
4. readFile(String file)
5. readFile(String file)
6. readFile(String fileName)
7. readFile(String fileName)
8. readFile(String filename)
9. readFile(String fileName)