folder copy

gistfile1.java

	public static void directoryCopy(File dust, File source){
		for(File sources:source.listFiles()){
			if(sources.isFile()){
				fileCopy(dust, sources);
			} else {
				File folder = new File(dust, sources.getName());
				folder.mkdir();
				directoryCopy(folder,sources);
			}
		}
	}
	public static void fileCopy(File dust, File source){
	    FileChannel srcChannel = null;
	    FileChannel destChannel = null;

	    try {
	        srcChannel = new FileInputStream(source).getChannel();
	        destChannel = new FileOutputStream(dust).getChannel();

	        srcChannel.transferTo(0, srcChannel.size(), destChannel);

	    } catch (IOException e) {
	        e.printStackTrace();

	    } finally {
	        if (srcChannel != null) {
	            try {
	                srcChannel.close();
	            } catch (IOException e) {
	            }
	        }
	        if (destChannel != null) {
	            try {
	                destChannel.close();
	            } catch (IOException e) {
	            }
	        }
	    }
	}