读取显示当前目录下的文件及目录-java io

很简单的一个需求，要求读取当前目录下所有的文件和目录，并显示出来。将实现记录下来，以备需要时参考。 下面时具体的实现 /** * 读取当前目录下的文件路径 * * @author * @since jdk1.4.2 * @version 1.0 * @date 2007-06-30 * */ public class ViewDirsAndFiles { private static String listFileStr = ""; private static int dirNumber = 0; private static int fileNumber = 0; private static String dirNumberString = "** 当前目录下的目录数:"; public static void main(String[] args) { try{ File saveFile = new File(args[1]); FileWriter fw = new FileWriter(saveFile); ViewDirsAndFiles lf = new ViewDirsAndFiles(); lf.listFile(args[0]); String dirNumberLine = dirNumberString += dirNumber + "\r\n"; String allWriterContent = dirNumberLine + listFileStr; //String fileNumberLine = fileNumberString += fileNumber + "\r\n\r\n"; //String allWriterContent = dirNumberLine + fileNumberLine + listFileStr; fw.write(allWriterContent); fw.close(); System.out.print("\r\n" + dirNumberLine); //System.out.print(fileNumberLine); }catch (ArrayIndexOutOfBoundsException aiobe) { //参数提示 //System.out.println("## Usage: ListFiles <source dir=""> <target file="">"); System.out.println("## 用法: java org.snailheart.util.ViewDirsAndFiles " +"<当前目录> <目标文件>"); }catch (IOException ioe) { System.out.println("## IO error!\r\n" + ioe.toString()); } } /** * 获取目录下的所有文件的绝对路径 * @param currDir 要查询的目录名 */ public void listFile(String currDir) { File file = new File(currDir); File[] list = file.listFiles(); for(int i = 0;i < list.length;i++) { try{ if (list[i].isDirectory()){ //是否是目录 new ViewDirsAndFiles().listFile(list[i].toString()); dirNumber++; }else { listFileStr += list[i].getAbsolutePath() + "\r\n"; //System.out.println(list[i].getAbsolutePath()); fileNumber++; } }catch (Exception ex) { listFileStr += "Access deny：" + list[i].getAbsolutePath() + "\r\n"; System.out.println("Access deny：" + list[i].getAbsolutePath()); } } } }