java:IO流(序列流整合多个)

版权声明：本文为博主原创文章，未经博主允许不得转载 https://blog.csdn.net/qq_24644517/article/details/84066996

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;

public class Demo1_SequenceInputstream {

	public static void main(String[] args) throws IOException {
//		demo1();
		FileInputStream fis1=new FileInputStream("a.txt");
		FileInputStream fis2=new FileInputStream("b.txt");
		FileInputStream fis3=new FileInputStream("c.txt");
		Vector<FileInputStream> v=new Vector<>();//创建集合对象，将流对象存储进来
		v.add(fis1);
		v.add(fis2);
		v.add(fis3);
		Enumeration<FileInputStream> en=v.elements();//返回此向量的组件的枚举
		SequenceInputStream sis=new SequenceInputStream(en);
		FileOutputStream fos=new FileOutputStream("zzz.txt");
		int b;
		while((b=sis.read())!=-1) {
			fos.write(b);
		}
		sis.close();
		fos.close();

	}
}