Java基础--IO流完成目录的复制

import java.io.*;

public class StrCopy {
    public static void main(String[] args) {
        File oldFile=new File("E:\\英雄时刻");
        File newFile=new File("C:\\");
        copy(oldFile,newFile);
    }

    private static void copy(File oldFile, File newFile) {
        File[] files=oldFile.listFiles();
        //如果File是文件的话，递归结束
        if(oldFile.isFile()){
            FileInputStream in=null;
            FileOutputStream out=null;
            try {
                in=new FileInputStream(oldFile);
                String path=(newFile.getAbsolutePath().endsWith("\\")?newFile.getAbsolutePath():newFile.getAbsolutePath()+"\\")+oldFile.getAbsolutePath().substring(3);
                out=new FileOutputStream(path);
                byte[]b=new byte[1024*1024];
                int count;
                while((count=in.read(b))!=-1){
                    out.write(b,0,count);
                }
                out.flush();
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }finally {
                if (out != null) {
                    try {
                        out.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
                if (in != null) {
                    try {
                        in.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
            return;
        }
        for(File file:files){
            if(file.isDirectory()){
                //新建对应的目录
                //System.out.println(file.getAbsoluteFile());
                String oldDir=file.getAbsolutePath();
                String newDir=(newFile.getAbsolutePath().endsWith("\\")?newFile.getAbsolutePath():newFile.getAbsolutePath()+"\\")+oldDir.substring(3);
                System.out.println(newDir);
                File newfile=new File(newDir);
                if (!newfile.exists()) {
                    newfile.mkdirs();
                }
            }

            copy(file,newFile );

        }
    }


}