Java File類中常見操作之資料夾的複製

public class CopyDir {
    public static void main(String[] args) throws IOException {
        File srcfile=new File("E:/桌面/WorkSpace");
        File desfile=new File("E:/桌面/123");
        
        copyDir(srcfile,desfile);
    }

    //複製資料夾
    public static void copyDir(File srcfile,File desfile) throws IOException{
            if(!desfile.exists()){
                desfile.mkdirs();
            }
            File[] files = srcfile.listFiles();
            
            for(File file:files){
                if(file.isFile()){
                    copyFile(file,new File(desfile,file.getName()));
                }else if(file.isDirectory()){
                    copyDir(file,new File(desfile,file.getName()));
                }
            }
    }
    //檔案的複製
    public static void copyFile(File srcfile,File desfile) throws IOException{
        //讀寫檔案
        FileInputStream fis=new FileInputStream(srcfile);
        FileOutputStream fos=new FileOutputStream(desfile);
        int len;
        byte[] bys=new byte[1024];
        while((len=fis.read(bys))!=-1){
            fos.write(bys, 0, len);
            fos.flush();
        }
        fos.close();
        fis.close();
    }
    
}