Java FileInputStream Read readFileToBytes(String path)

Description

Read file contents into byte array, which is suitable for small files.

License

Apache License

Parameter

Parameter	Description
String	File path

Return

byte[] File contents

Declaration

public static byte[] readFileToBytes(String path) throws IOException, FileNotFoundException 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

public class Main {
    /**//from   w  w  w  . j a  v  a  2 s  .c  om
     * Read file contents into byte array, which is suitable for small files.
     * 
     * @param   String    File path
     * @return   byte[]    File contents
     */
    public static byte[] readFileToBytes(String path) throws IOException, FileNotFoundException {
        File file = new File(path);
        FileInputStream fin = new FileInputStream(path);

        // First, we need to test if the file size is too large for maximum byte array length
        if (file.length() >= Integer.MAX_VALUE) {
            System.out.println("File size is too big. Please use another function to read the contents!");
            return null;
        }

        byte[] contents = new byte[(int) (file.length())];

        fin.read(contents);

        fin.close();

        return contents;
    }
}

Related

1. readFileToByteArray(File file)
2. readFileToByteArray(String file)
3. readFileToByteArray(String filename)
4. readFileToBytes(File f)
5. readFileToBytes(File f, int max)
6. readFileToStr(String fn, String charset)
7. readFileUTF8(String file)
8. readFileUTF_8(String filePath)
9. writeFile(File file, byte[] buffer, ZipOutputStream zos)