Java parsing text file and preserving line breaks?
I have been researching how to do this and becoming a bit confused, I have tried so far with Scanner but that does not seem to preserve line breaks and I can't figure out how to make it determine if a line is a line break. I would appreciate if anyone has any advice. I have been using the Scanner class as below but am not sure how to even check if the line is a new line. Thanks
for (String fileName : f.list()) {
fileCount++;
Scanner sc = new Scanner(new File(f, fileName));
int count = 0;
String outputFileText = ""开发者_运维百科;
//System.out.println(fileCount);
String text="";
while (sc.hasNext()) {
String line = sc.nextLine();
}
}
If you're just trying to read the file, I would suggesting using LineNumberReader
instead.
LineNumberReader lnr = new LineNumberReader(new FileReader(f));
String line = "";
while(line != null){
line = lnr.readLine();
if(line==null){break;}
/* do stuff */
}
Java's Scanner class already splits it into lines for you, even if the line is an empty String. You just have to scan through the lines again to get your values:
Scanner lineScanner;
while(sc.hasNext())
{
String nextInputLine = sc.nextLine();
lineScanner = new Scanner(nextInputLine);
while(lineScanner.hasNext())
{
//read the values
}
}
You probably want to use BufferedReader#readLine.
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