SequenceInputStream class concatenates multiple InputStreams.
Constructors from SequenceInputStream:
SequenceInputStream(InputStream first, InputStream second)
a pair of InputStreams
SequenceInputStream(Enumeration streamEnum)
an Enumeration of InputStreams
SequenceInputStream reads from the first InputStream until it runs out and then switches over to the second one.
Revised from Open JDK source code
import java.io.FileInputStream;
import java.io.IOException;
import java.io.SequenceInputStream;
public class Main {
public static void main(String args[]) throws IOException {
SequenceInputStream inStream;
FileInputStream f1 = new FileInputStream("file1.java");
FileInputStream f2 = new FileInputStream("file2.java");
inStream = new SequenceInputStream(f1, f2);
boolean eof = false;
int byteCount = 0;
while (!eof) {
int c = inStream.read();
if (c == -1)
eof = true;
else {
System.out.print((char) c);
++byteCount;
}
}
System.out.println(byteCount + " bytes were read");
inStream.close();
f1.close();
f2.close();
}
}