This is the problem:
while (br.readLine() != null) {
System.out.println(br.readLine());
}
You’ve got two calls to readLine
– the first only checks that there’s a line (but reads it and throws it away) and the second reads the next line. You want:
String line;
while ((line = br.readLine()) != null) {
System.out.println(line);
}
Now we’re only calling readLine()
once per loop iteration, and using the line that we’ve read both for the “have we finished?” and “print out the line” parts.