What is the best way to merge a file content into log file

Question

What is the best way to merge a file content into log file.
In worst case, I will read the file line by line as string, then use
logger.info(lineString)to output to log file.
However, is there better way to do this?
The eventual log file will be something like:
log message 1
log message 2
content from file line 1
content from file line 2
content from file line 3
log message 3
log message 4Thanks

Answer 1

John618 wrote:
Thank you and let me explain:
1. What do you mean by better?
I would like to see better performance. read line by line and log each line as string can be slow. Did you measure this and determine that it is actually a problem for your application? Or are you guessing?
Regardless of what you do you are still going to need to read the file.
>
2.The only better way I can think of is not having to do it, but I assume you have a very good reason to want to do this.
Yes, I have to do it beacuse the requirement is to have that file content be part of logging.
Any idea?How is it supposed to be part of it? For example which of the following is better?
        File AAA - contents
                   First Line
                   Second Line XXX
        Log 1
                2009-03-27 DEBUG: Random preceding line
                2009-03-27 DEBUG: First Line
                2009-03-27 DEBUG: Second Line XXX
                2009-03-27 DEBUG: Random following line
        Log 2
                2009-03-27 DEBUG: Random preceding line
                2009-03-27 DEBUG: ----- File: AAA -------------
                First Line
                Second Line XXX
                2009-03-27 DEBUG: Random following lineBoth of the above have some advantages and disadvantages.
The first in a mult-threaded app can end up with intermittent log entries in between lines, so having log lines with thread ids becomes important.
The first can be created by reading one line at a time and posting one at a time.
The second can be created by reading the entire file as a single string and then posting using a single log statement.