Java实现文件夹（包括内容）的复制

public class CopyDemo1 {
	/*
	 * 从键盘输入源和目标路径
	 * 调用复制文件夹及其内容的方法，将文件夹整个复制过去
	 */
	public static void main(String[] args) throws IOException{
		Scanner sc = new Scanner(System.in);
		System.out.println("请输入复制源的路径： ");
		String src = sc.next();
		System.out.println("请输入复制目标路径： ");
		String dest = sc.next();
		copyDir(new File(src), new File(dest));
	}
	
	/*
	 * 定义方法复制文件夹
	 * 参数分别传入源和目标的目录的路径
	 */
	public static void copyDir(File src,File dest) {
		FileInputStream fis = null;
		FileOutputStream fos =null;
		try {
			File subDest = new File(dest.getAbsolutePath() + "\\" + src.getName());
			subDest.mkdirs();
			File[] fileArr = src.listFiles();
			for(File f : fileArr) {
				if(f.isDirectory()) {
					copyDir(f,subDest);
				}else {
					fis = new FileInputStream(f.getAbsolutePath());
					fos = new FileOutputStream(subDest.getAbsolutePath() + "\\" +  f.getName());
					int len = 0;
					byte[] bytes = new byte[1024];
					while((len = fis.read(bytes)) != -1) {
						fos.write(bytes, 0, len);
					}
					fos.close();
					fis.close();
				}
			}
		}catch(IOException ex) {
			System.out.println(ex);
			throw new RuntimeException("读写文件失败");
		}finally {
			try {
				if(fos != null)
					fos.close();
			}catch(IOException ex) {
				throw new RuntimeException("释放资源失败");
			}finally {
				try {
					if(fis != null)
						fis.close();
				}catch(IOException ex) {
					throw new RuntimeException("释放资源失败");
				}
			}
		}
	}
}