20.sequenceinputstream(合并流)

public class SequenceinputstreamDemo {
    public static void main(String[] args) throws Exception {
        
        SequenceInputStream s = new SequenceInputStream((new FileInputStream("file/aaa.txt")),(new FileInputStream("file/bbb.txt")));
        
        int len = -1;
        byte[] b = new  byte[1024];
        
        while((len = s.read(b)) != -1){
            
            System.out.println(new String(b,0,len));
        }
        
        s.close();
    }
}