Java进阶文件输入输出实操（图片拷贝）

• 把某个目录下的全部图片，全部拷贝到另外一个目录

  package test;

  import domee.chapter6_7.B;

  import java.io.*;

  public class Ex10_10 {
  public static void main(String[] args) throws IOException {
  String dir = “C:\Users\123\Desktop\test”;
  creatFile(dir);
  File file = new File(dir+“\img”);
  File[] files = file.listFiles();
  for (File file1 : files){
  String name = file1.getName();
  System.out.println(name);
  copy(file.getAbsolutePath()+“”+name,dir+“\copy”+name);
  }

  }public static void creatFile(String dir){File file = new File(dir+"\copy");file.mkdir();
  }public static void copy(String from,String to)throws IOException {InputStream inputStream = new FileInputStream(from);OutputStream outputStream = new FileOutputStream(to);BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream);BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(outputStream);byte[] bytes = new byte[inputStream.available()];int size ;while ( (size = inputStream.read(bytes))!= -1){bufferedOutputStream.write(bytes,0,size);}bufferedInputStream.close();bufferedOutputStream.close();}
  

  }