FileUtils.java

package folioxml.utils;

import java.io.*;
import java.nio.channels.FileChannel;

public class FileUtils {

    public static StringBuffer readFileToString(File f) throws IOException {
        BufferedReader input = new BufferedReader(new FileReader(f));
        StringBuffer sb = new StringBuffer();
        while (input.ready()) {
            sb.append(input.readLine() + "\n");
        }
        input.close();
        return sb;
    }

    public static File copyFile(File from, File to) throws IOException {
        FileChannel inChannel = new FileInputStream(from).getChannel();
        FileChannel outChannel = new FileOutputStream(to).getChannel();
        try {
            inChannel.transferTo(0, inChannel.size(), outChannel);
        } catch (IOException e) {
            throw e;
        } finally {
            if (inChannel != null)
                inChannel.close();
            if (outChannel != null)
                outChannel.close();

        }
        return to;
    }
}