Java directory copy
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; public class Main { /**// ww w . j av a 2 s. co m * Copy the source file system structure into the supplied target location. If * the source is a file, the destination will be created as a file; if the * source is a directory, the destination will be created as a directory. * * @param sourceFileOrDirectory * the file or directory whose contents are to be copied into the * target location * @param destinationFileOrDirectory * the location where the copy is to be placed; does not need to exist, * but if it does its type must match that of <code>src</code> * @return the number of files (not directories) that were copied * @throws IllegalArgumentException * if the <code>src</code> or <code>dest</code> references are null * @throws IOException */ public static int copy(File sourceFileOrDirectory, File destinationFileOrDirectory) throws IOException { int numberOfFilesCopied = 0; if (sourceFileOrDirectory.isDirectory()) { destinationFileOrDirectory.mkdirs(); String list[] = sourceFileOrDirectory.list(); for (int i = 0; i < list.length; i++) { String dest1 = destinationFileOrDirectory.getPath() + File.separator + list[i]; String src1 = sourceFileOrDirectory.getPath() + File.separator + list[i]; numberOfFilesCopied += copy(new File(src1), new File(dest1)); } } else { InputStream fin = new FileInputStream(sourceFileOrDirectory); fin = new BufferedInputStream(fin); try { OutputStream fout = new FileOutputStream(destinationFileOrDirectory); fout = new BufferedOutputStream(fout); try { int c; while ((c = fin.read()) >= 0) { fout.write(c); } } finally { fout.close(); } } finally { fin.close(); } numberOfFilesCopied++; } return numberOfFilesCopied; } } /* * JBoss DNA (http://www.jboss.org/dna) See the COPYRIGHT.txt file distributed * with this work for information regarding copyright ownership. Some portions * may be licensed to Red Hat, Inc. under one or more contributor license * agreements. See the AUTHORS.txt file in the distribution for a full listing * of individual contributors. * * JBoss DNA is free software. Unless otherwise indicated, all code in JBoss DNA * is licensed to you under the terms of the GNU Lesser General Public License * as published by the Free Software Foundation; either version 2.1 of the * License, or (at your option) any later version. * * JBoss DNA is distributed in the hope that it will be useful, but WITHOUT ANY * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR * A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more * details. * * You should have received a copy of the GNU Lesser General Public License * along with this software; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA, or see the FSF * site: http://www.fsf.org. */