[ACCEPTED]-Can BufferedReader (Java) read next line without moving the pointer?-java
Accepted answer
You can use mark() and reset() to mark a spot in the 1 stream and then return to it. Example:
int BUFFER_SIZE = 1000;
buf.mark(BUFFER_SIZE);
buf.readLine(); // returns the GET
buf.readLine(); // returns the Host header
buf.reset(); // rewinds the stream back to the mark
buf.readLine(); // returns the GET again
Just read both current and next line in 1 the loop.
BufferedReader reader = null;
try {
reader = new BufferedReader(new InputStreamReader(file, encoding));
for (String next, line = reader.readLine(); line != null; line = next) {
next = reader.readLine();
System.out.println("Current line: " + line);
System.out.println("Next line: " + next);
}
} finally {
if (reader != null) try { reader.close(); } catch (IOException logOrIgnore) {}
}
Source:
stackoverflow.com
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