Here you can find the source of copyDirectory(File sourceLocation, File targetLocation)
public static void copyDirectory(File sourceLocation, File targetLocation) throws IOException
//package com.java2s; //License from project: Open Source License import java.io.*; public class Main { public static void copyDirectory(File sourceLocation, File targetLocation) throws IOException { if (sourceLocation.isDirectory()) { if (!targetLocation.exists()) { targetLocation.mkdirs(); }/*from ww w.j a v a2 s.com*/ String[] children = sourceLocation.list(); for (int i = 0; i < children.length; i++) { copyDirectory(new File(sourceLocation, children[i]), new File(targetLocation, children[i])); } } else { InputStream in = new FileInputStream(sourceLocation); OutputStream out = new FileOutputStream(targetLocation); // Copy the bits from instream to outstream byte[] buf = new byte[1024]; int len; while ((len = in.read(buf)) > 0) { out.write(buf, 0, len); } in.close(); out.close(); } } }