java实现文件夹下所有文件的拷贝
无聊写了一个实现文件-文件，文件夹-文件夹（包括源文件夹所有文件），文件-文件夹的拷贝的实用类.
import java.io.File;import java.io.FileNotFoundException;import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;import java.io.Reader;import java.io.Writer;public class Util {public static int buffer_size = 2048;private static void doCopy(File src, File dst) {if (src.isFile()) {try {copyFile(src, dst);} catch (IOException e) {e.printStackTrace();}} else {File dir = copyDirectory(src, dst);File[] files = src.listFiles();if (files.length == 0) {} else {for (File file : files) {doCopy(file, dir);}}}}public static void copy(File src, File dst) throws IOException {if (!src.exists() || !dst.exists())throw new FileNotFoundException();else if (src.isFile() && dst.isFile())copy(new FileReader(src), new FileWriter(dst));else if (src.isDirectory() && (!dst.isDirectory()))throw new IllegalArgumentException("Destination should be a directory!");else {doCopy(src, dst);}}private static void copyFile(File src, File dst) throws IOException {File file = new File(dst, src.getName());copy(new FileReader(src), new FileWriter(file));}private static File copyDirectory(File src, File dst) {File file = new File(dst, src.getName());file.mkdir();return file;}private static int copy(Reader in, Writer out) throws IOException {int byteCount = 0;try {int bytesReader = -1;char[] buffer = new char[buffer_size];while ((bytesReader = in.read(buffer)) != -1) {out.write(buffer, 0, bytesReader);byteCount += bytesReader;}out.flush();} finally {in.close();out.close();}return byteCount;}} 1 楼 liujunsong 2009-01-25 建议你可以调用一下 DOS命令: