文件的创建，删除，拷贝
学到了就留个笔记吧。。。。。

package com.zkl.file;/** * 示例 * 文件的创建，删除，拷贝 * @author zhuangkunliang *  */import java.io.*;public class FileAndFolderOperate {static FileAndFolderOperate ffo;/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubffo = new FileAndFolderOperate();ffo.createNewFile("f_obj2.txt");ffo.deleteFile("f_obj2");String[] s = {"c:\\yd.exe","d:\\yd2.exe"};ffo.copyFile(s);}/** * 创建文件 * @param fileName * @return */public boolean createNewFile(String fileName){if(fileName!=null){File f_obj = new File(fileName);try {if(f_obj.createNewFile()){return true;}else{System.out.println("文件已经存在");return false;}} catch (Exception e) {// TODO: handle exceptionreturn false;}}else{System.out.println("请输入需要删除的文件路径!");}return false;}//end createNewFile()/** * 删除文件 * 删除文件夹时，文件夹必须为空的文件夹 * @param fileName * @return */public boolean deleteFile(String fileName){if(fileName != null){File f_obj = new File(fileName);try {if(f_obj.delete()){return true;}else{System.out.println("文件不存在");return false;}} catch (Exception e) {// TODO: handle exception}}return false;}//end deleteFile()/** * 拷贝文件 * @param args */public void copyFile(String[] args){if(args.length!=2){System.out.println("请输入拷贝的源文件和目标文件路径");}else{try {File f_obj1 = new File(args[0]);File f_obj2 = new File(args[1]);if(!f_obj1.isFile()){System.out.println(args[0] + "文件不存在，无法拷贝");}else{FileInputStream fis = new FileInputStream(f_obj1);BufferedInputStream bis = new BufferedInputStream(fis);FileOutputStream fos = new FileOutputStream(f_obj2);BufferedOutputStream bos = new BufferedOutputStream(fos);int f_data;do{f_data = bis.read();if(f_data!=-1){bos.write(f_data);}}while(f_data!=-1);bis.close();bos.close();}} catch (Exception e) {// TODO: handle exceptionSystem.out.println("文件IO出错");}}}}