BufferedInputStream

package com.daijunyi.file;

import java.io.*;

public class BufferStreamTest {

    public static void main(String[] args) {
        File infile = new File("javaee学习图.png");
        File outfile = new File("javaee学习图1.png");

        BufferedInputStream bis = null;
        BufferedOutputStream bos = null;
        try {
            FileInputStream fis = new FileInputStream(infile);
            FileOutputStream fos = new FileOutputStream(outfile);

            bis = new BufferedInputStream(fis);
            bos = new BufferedOutputStream(fos);

            byte[] buffer = new byte[1024];
            int len;
            while ((len = bis.read(buffer)) != -1){
                bos.write(buffer,0,len);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (bis != null){
                    bis.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                if (bos != null){
                    bos.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

    }
}