difference between flush and close function in case of filewriter in java

Question

I need to know what is exact difference between flush and close function in Java?

And When the data is dumped into a file during writing of file?

Please prov

Answer 1

flush() flushes content of buffer to destination.And you can write something again into the stream.close() flushes content to destination and closes the stream. After close() you can't write anything anymore.