//合并流
public static void main(String[] args) throws Exception {
//使用方式一
// InputStream in1 = new FileInputStream("/home/loop/下载/a.txt") ;
// @SuppressWarnings("resource")
// InputStream in2 = new FileInputStream("/home/loop/下载/b.txt") ;
// SequenceInputStream sin = new SequenceInputStream(in1, in2) ;
//使用方式二
Vector<InputStream> vector = new Vector<>() ;
vector.add(new FileInputStream("/home/loop/下载/a.txt")) ;
vector.add(new FileInputStream("/home/loop/下载/b.txt")) ;
vector.add(new FileInputStream("/home/loop/下载/c.txt")) ;
SequenceInputStream sin = new SequenceInputStream(vector.elements()) ;
OutputStream out = new FileOutputStream("/home/loop/下载/d.txt") ;
int len ;
byte[] buf = new byte[1024*8] ;
while((len = sin.read(buf)) != -1){
out.write(buf, 0, len);
}
out.close();
sin.close();
}