How to read a live file - that is being writen by another writer thread

问题

I want to read a (log file being written continuously by an app)

Currently I have temp solution using RandomAccessFile (read mode)

Is there any other solution to this problem ?

回答1:

Java 7 has new API that allows listening to the file system events: http://java.dzone.com/news/how-watch-file-system-changes

If you are stuck with previous version of java use poling as described here: File changed listener in Java

回答2:

You probably could use FileInputStream to read this file. The fact that another process/thread is writing to it should not be a problem, especially if it only appends data to the file.

来源：https://stackoverflow.com/questions/14799945/how-to-read-a-live-file-that-is-being-writen-by-another-writer-thread