缓冲流Demon01-526互联

package test2;

import java.io.*;

//缓冲流
public class Demo02 {

    public static void main(String[] args) {
        FileInputStream fis = null;
        FileOutputStream fos = null;
        BufferedInputStream bis = null;
        BufferedOutputStream bos = null;
        try {
            fis = new FileInputStream("H:\\src.png");
            fos = new FileOutputStream("H:\\target.png");

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

            int readData;

            long start = System.currentTimeMillis();
            while ((readData = bis.read()) != -1) {
                bos.write((char)readData);
            }
            long end = System.currentTimeMillis();
            System.out.println("运行时间：" + (end - start));

            fos.flush();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (bis != null) {
                try {
                    bis.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (bos != null) {
                try {
                    bos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }


    }

}