把mp3分成n份之后合并

package cn.cm.conse;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.SequenceInputStream;
import java.util.Enumeration;
import java.util.Vector;

//切割mp3成三份，之后合并
public class Demo01 {

    public static void main(String[] args) throws IOException {
        // TODO Auto-generated method stub
        method();
        stx();

    }

    public static void method() throws FileNotFoundException, IOException {//分割为3份mp3
        File file=new File("E:\\CloudMusic\\123.mp3");
        FileInputStream input=new FileInputStream(file);
        byte[] b=new byte[1024*1024];
        int length=0;
        File files=new File("E:\\music");
        for(int i=0;((length=input.read(b))!=-1);i++){
            File fi=new File(files,i+".mp3");
            FileOutputStream filed=new FileOutputStream(fi);
            filed.write(b, 0, length);
            filed.close();
        }
        input.close();
    }

    public static void stx() throws IOException{
        File dir=new File("E:\\music");
        Vector<FileInputStream> vector=new Vector<FileInputStream>();
        File file[]=dir.listFiles();
        for(File fi:file){
            if(fi.getName().endsWith(".mp3")){//别忘了mp3后有两个括号
                vector.add(new FileInputStream(fi));
            } }
        Enumeration<FileInputStream> e=vector.elements();
        SequenceInputStream input=new SequenceInputStream(e);
        FileOutputStream out=new FileOutputStream("F:\\");
        byte[] b=new byte[1024]; 
        int length=0;
        while((length=input.read(b))!=-1){
            out.write(b,0,length);
        }
        out.close();
        input.close();

}}