Java DataInputStream Create getReaderFor(File file)

Description

get Reader For

License

Open Source License

Declaration

public static DataInputStream getReaderFor(File file)
            throws IOException 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.io.*;

public class Main {
    public static DataInputStream getReaderFor(File file)
            throws IOException {

        DataInputStream data;//from   w  w w .j a v  a  2 s  .co m

        // If the file is longer than we can fit into an array, use the slow method.
        if (file.length() > Integer.MAX_VALUE)
            data = new DataInputStream(new BufferedInputStream(
                    new FileInputStream(file)));
        // Otherwise, read from a byte array, which is 4x faster on my machine.
        else {

            InputStream stream = new BufferedInputStream(
                    new FileInputStream(file), 256);
            byte[] bytes = new byte[(int) file.length()];
            stream.read(bytes, 0, bytes.length);
            stream.close();
            data = new DataInputStream(new ByteArrayInputStream(bytes));

        }

        return data;

    }
}

Related

1. getInputStream(String file)
2. getInputStream(String path)