File I/O Concept

Question

I'm new in java. My assignment requires using the File I/O Concept The Problem Is when I run the code for the second time, it makes the file new and the clear, I want to write the new data with the old data each other. any idea ?

and sorry for my poor english.

Welcome to Stack Overflow. Please read the [Frequently Asked Questions](http://stackoverflow.com/faq) and [How to Ask](http://stackoverflow.com/questions/how-to-ask). Please post the relevant part of your code so we know how you're opening the file. — James Scholes, May 11 '13 at 21:58
[Possible duplicate](http://stackoverflow.com/questions/1625234/how-to-append-text-to-an-existing-file-in-java) — user123, May 11 '13 at 21:59
Never hurts to go to the [source](http://www.oracle.com/technetwork/java/javase/documentation/index.html). — ChiefTwoPencils, May 11 '13 at 22:00

score 2 · Answer 1 · answered May 11 '13 at 22:00

2

Both FileWriter and FileOutputStream have a constructor taking a boolean append as argument. Use this constructor with append set to true.

Reading the javadoc helps finding the solution for simple problems like that. Java also has a tutorial for almost everything. Google for someSubject Java tutorial, and you'll find them.

answered May 11 '13 at 22:00

JB Nizet

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Thanks a lot. May you tell me How I Can reset a scanner to the beginning of a file? – user2373804 May 11 '13 at 23:32
You recreate a new one on top of a new input stream. – JB Nizet May 12 '13 at 07:01

File I/O Concept

1 Answers1