将input中的文件剪切到output里，代码如下：

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class Jianqie {
	public static void main(String[] args) {
		Jianqie test1 = new Jianqie();
		try {
			File input=new File("input");
			File output=new File("output");
			test1.cutDir(input, output);
		} catch (Exception e) {
			e.printStackTrace();
		}
		System.out.println("剪切完毕!");
	}

	/*
	 * 目录的剪贴操作
	 * 
	 * @param src 源文件夹
	 * 
	 * @param dest目标文件夹
	 */
	public void cutDir(File src, File dest) throws IOException {
		if (dest.isFile())
			throw new RuntimeException(dest + "不是文件夾");
		if (src.isFile()) {
			File destFile = new File(dest, src.getName());
			copyFile(src, destFile);
		} else if (src.isDirectory()) {
			File destFile = new File(dest, src.getName());
			destFile.mkdirs();
			File[] children = src.listFiles();
			for (File tmp : children) {
				cutDir(tmp, destFile);
			}
		}
		src.delete();
	}
	/*
	 * 文件的拷贝操作
	 */
	public void copyFile(File srcFile, File destFile) throws IOException {
		try (FileInputStream fis = new FileInputStream(srcFile);
				FileOutputStream fos = new FileOutputStream(destFile);) {
			byte[] buffer = new byte[1024];
			int len = 0;
			while ((len = fis.read(buffer)) > 0) {
				fos.write(buffer, 0, len);
			}
		}
	}
}