例子

字节处理流拷贝文件

import java.io.*;
public class Main {
    public static void main(String[] args) throws Exception {
        String srcPath = "./story.txt";
        String copyPath = "./story_copy1.txt";
        BufferedInputStream bis = new BufferedInputStream(new FileInputStream(srcPath));
        BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(copyPath));
        byte[] buffer = new byte[2048];
        int readLen = 0;
        while ((readLen = bis.read(buffer)) != -1) {
            bos.write(buffer, 0, readLen);
        }
        bis.close();
        bos.close();
    }
}