Java SequenceInputStream.

SequenceInputStream1.java

import java.io.*;
class SequenceInputStream1
{
public static void main(String surat[])throws IOException
{
FileInputStream fin1=new FileInputStream("m1.txt");
FileInputStream fin2=new FileInputStream("m2.txt");

SequenceInputStream sis=new SequenceInputStream(fin1,fin2);

int i;
while((i=sis.read())!=-1)
{
System.out.println((char)i);
}
}
}

m1.txt

Mahi1

m2.txt

Mahi2

Output: