import java.io.*;
public class test01 {

    public static void main(String[] args) {
        int str;
        FileInputStream fr;
        FileOutputStream fw;
        BufferedInputStream br=null;
        BufferedOutputStream bw=null;
        try {
            fr = new FileInputStream("D:\\Java库\\source\\有的人一直在长大，有的人却不会变老了output.mp4");
            fw = new FileOutputStream("D:\\Java库\\target\\有的人一直在长大，有的人却不会变老了output.mp4");
            br=new BufferedInputStream(fr);
            bw=new BufferedOutputStream(fw);
            while((str=br.read())!=-1){
                bw.write(str);
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }finally{
            try {
                bw.flush();
                br.close();
                bw.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}