IO、序列流

import java.io.*;
import java.util.*;
public class Practice_2 {

    public static void main(String[] args) throws IOException {
        // TODO Auto-generated method stub 
        Vector<FileInputStream> v = new Vector<FileInputStream>();
        
        v.add(new FileInputStream("1.txt"));
        v.add(new FileInputStream("2.txt"));
        v.add(new FileInputStream("3.txt"));
        
        Enumeration<FileInputStream> en = v.elements();
        
        SequenceInputStream sis = new SequenceInputStream(en);
        FileOutputStream fos = new FileOutputStream("4.txt");
        byte[] buf = new byte[1024];
        int len = 0;
        while((len=sis.read(buf))!=-1)
        {
            fos.write(buf,0,len);
        }
        fos.close();
        sis.close();
    }
}

 

来源：https://www.cnblogs.com/zxl1010/p/11672146.html