[Advanced-java] simulate Unix tail -f function

[karenshiau@xxxxxxxxxx (Karen Shiau)]

I have an application which will read log files from other 
apps, and grep "ERROR" or "WARNING" on those log files.  
However, the new log text is keep coming and appending to the 
end of files.  How can I simulate the functionality of Unix 
tail -f command on Java?

Any hint or direction is much appreciated.

Thanks

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