java_copy_file.java

private static void copyFileUsingJava7Files(File source, File dest)
		throws IOException {
	Files.copy(source.toPath(), dest.toPath());
}

 
private static void copyFileUsingFileStreams(File source, File dest)
		throws IOException {
	InputStream input = null;
	OutputStream output = null;
	try {
		input = new FileInputStream(source);
		output = new FileOutputStream(dest);
		byte[] buf = new byte[1024];
		int bytesRead;
		while ((bytesRead = input.read(buf)) > 0) {
			output.write(buf, 0, bytesRead);
		}
	} finally {
		input.close();
		output.close();
	}
}