flush method in java 2011

[saneha]

flush method

respected Sir

kindly explain me following two points

why we use flush()?

why we use iport java.util.*?



thnk you

Nadia

[Vuhelper]

flush()

Flushes this output stream and forces any buffered output bytes to be written out. The general contract of flush is that calling it is an indication that, if any bytes previously written have been buffered by the implementation of the output stream, such bytes should immediately be written to their intended destination.

java.util

Contains the collections framework, legacy collection classes, event model, date and time facilities, internationalization, and miscellaneous utility classes (a string tokenizer, a random-number generator, and a bit array).