Can strings from System.in go to BufferedReader(InputStreamReader) "discontinuously"?

Question

Java

For example: The System.in input should be a million lines (or even more). Then while is done until null is encountered . But can it be that null gets hit before a million rows are finished? For example, due to the low byte feed rate of System.in input? Will he wait for a new "portion" himself, or will the cycle end ahead of time?

BufferedReader bufferRead = new BufferedReader(new InputStreamReader(System.in));

String bufferedValue = bufferRead.readLine();

while(bufferedValue != null) {
    // actions
    bufferedValue = bufferRead.readLine();
}

If so, what is the best way to read large streams of strings from System.in?

Answer 1

System.in keyboard input stream. Zero will not be there, it will be due to the slow supply of characters.