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generics + raw types + serializer

// IO.java
// $Id: IO.java,v 1.6 2013/10/18 13:42:30 ylafon Exp $
// (c) COPYRIGHT MIT and INRIA, 1998.
// Please first read the full copyright statement in file COPYRIGHT.html

package org.w3c.util;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

/**
 * @author Beno�t Mah� (bmahe@w3.org)
 * @version $Revision: 1.6 $
 */
public class IO {

    /**
     * Copy source into dest.
     */
    public static void copy(File source, File dest)
            throws IOException {
        BufferedInputStream in =
                new BufferedInputStream(new FileInputStream(source));
        BufferedOutputStream out =
                new BufferedOutputStream(new FileOutputStream(dest));
        byte buffer[] = new byte[1024];
        int read = -1;
        while ((read = in.read(buffer, 0, 1024)) != -1)
            out.write(buffer, 0, read);
        out.flush();
        out.close();
        in.close();
    }

    /**
     * Copy source into dest.
     */
    public static void copy(InputStream in, OutputStream out)
            throws IOException {
        BufferedInputStream bin =
                new BufferedInputStream(in);
        BufferedOutputStream bout =
                new BufferedOutputStream(out);
        byte buffer[] = new byte[1024];
        int read = -1;
        while ((read = bin.read(buffer, 0, 1024)) != -1)
            bout.write(buffer, 0, read);
        bout.flush();
        bout.close();
        bin.close();
    }

    /**
     * Delete recursivly
     *
     * @param file the file (or directory) to delete.
     */
    public static boolean delete(File file) {
        if (file.exists()) {
            if (file.isDirectory()) {
                if (clean(file)) {
                    return file.delete();
                } else {
                    return false;
                }
            } else {
                return file.delete();
            }
        }
        return true;
    }

    /**
     * Clean recursivly
     *
     * @param file the directory to clean
     */
    public static boolean clean(File file) {
        if (file.isDirectory()) {
            String filen[] = file.list();
            for (String aFilen : filen) {
                File subfile = new File(file, aFilen);
                if ((subfile.isDirectory()) && (!clean(subfile))) {
                    return false;
                } else if (!subfile.delete()) {
                    return false;
                }
            }
        }
        return true;
    }

}