FileUtils.java Source code

Introduction

Here is the source code for FileUtils.java

Source

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.nio.channels.FileChannel;

public class FileUtils {
    public static void copyFile(File in, File out) throws IOException {
        FileChannel inChannel = new FileInputStream(in).getChannel();
        FileChannel outChannel = new FileOutputStream(out).getChannel();
        try {
            // magic number for Windows, 64Mb - 32Kb)
            int maxCount = (64 * 1024 * 1024) - (32 * 1024);
            long size = inChannel.size();
            long position = 0;
            while (position < size) {
                position += inChannel.transferTo(position, maxCount, outChannel);
            }
        } catch (IOException e) {
            throw e;
        } finally {
            if (inChannel != null)
                inChannel.close();
            if (outChannel != null)
                outChannel.close();
        }
    }

    public static void makeFile(String Path, String content) {
        try {
            // Create file
            FileWriter fstream = new FileWriter(Path);
            BufferedWriter bf = new BufferedWriter(fstream);
            bf.write(content);
            // Close the output stream
            bf.close();
        } catch (Exception e) {// Catch exception if any
            System.err.println("Error: " + e.getMessage());
        }
    }

    public static void main(String args[]) throws IOException {
        FileUtils.copyFile(new File(args[0]), new File(args[1]));
    }
}