FileInputStream与FileOutputStream 复制文件例子代码

	try {File sourceFile = new File("C:\\Users\\prize\\Desktop\\Demo1\\盗墓笔记7.txt");//创建源文件InputStream inputStream = new FileInputStream(sourceFile);//创建输入文件流BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream)); //创建文本行缓存输入流 导入  缓存输入流File targetFile = new File("F:\\手机T卡资料\\直接复制T卡\\EBOOK\\复制的书.txt"); //创建复制的目标文件if (targetFile.exists()) { //判断文件是否存在targetFile.delete(); //删除文件targetFile.createNewFile();		 //创建文件}else {targetFile.createNewFile();				}OutputStream out = new FileOutputStream(targetFile); //创建输出文件流BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(out)); //创建文本缓存输出流 导入 缓存输出流String aString = null; //给一行的内容准备的Stringint i = 0;while ((aString = reader.readLine()) != null && i<20) { //读取一行，并且赋值给aString，然后在判断不是空值//i++;  //此处是为了输出指定数量行数写的 循环自增，writer.write("\r\n"+aString); //将内容添加到输出流中//System.out.println(aString);}writer.flush(); //刷新输出流writer.close(); //关闭流 ，注意流的关闭顺序out.close();reader.close();inputStream.close();} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}

批量处理文件：

 public void fileList() {File inFile = new File("C:\\Users\\lenovo\\Desktop\\copy\\color");File [] files = inFile.listFiles();for (int i = 0; i < files.length; i++) {files[i].delete();System.out.println(files[i].toString());}