I am using buffered reader to grab a line at a time from a text file. I am trying to also get the line number from the text file using a tracking integer. Unfortunately BufferedReader is skipping empty lines (ones with just /n or the carriage return).
Is there a better way to solve this? Would using scanner work?
Example code:
int lineNumber = 0;
while ((s = br.readLine()) != null) {
this.charSequence.add(s, ++lineNumber);
}
I could not reproduce your claim that BufferedReader
skips empty lines; it should NOT have.
Here are snippets to show that empty lines aren't just skipped.
java.io.BufferedReader
String text = "line1\n\n\nline4";
BufferedReader br = new BufferedReader(new StringReader(text));
String line;
int lineNumber = 0;
while ((line = br.readLine()) != null) {
System.out.printf("%04d: %s%n", ++lineNumber, line);
}
java.io.LineNumberReader
String text = "line1\n\n\nline4";
LineNumberReader lnr = new LineNumberReader(new StringReader(text));
String line;
while ((line = lnr.readLine()) != null) {
System.out.printf("%04d: %s%n", lnr.getLineNumber(), line);
}
java.util.Scanner
String text = "line1\n\n\nline4";
Scanner sc = new Scanner(text);
int lineNumber = 0;
while (sc.hasNextLine()) {
System.out.printf("%04d: %s%n", ++lineNumber, sc.nextLine());
}
The output for any of the above snippets is:
0001: line1
0002:
0003:
0004: line4
LineNumberReader
+ Scanner
combo!java.util.Scanner
- has many examples%02d %01d
?