CODEWITHSUNDEEP
java
TLD
TLD

Reputation: 8135

Wait for writing file

I have an small app that write data to file then reading back data, 

writeData();
readData();

but it seems that readData() is executed before WriteData() finished its execution, is there any away to wait for writeData()?
Thank you very much.

Upvotes: 1

Views: 166

Answers (2)

Florian Barth
Florian Barth

Reputation: 1392

Try to call the flush and close operation on the OutputStream you are using.

outputStream.flush();
outputStream.close();

If you are working in the main thread and it still doesn't update, maybe your inspection of the value is delayed? Is it UI-based and you don't update the UI?

The code of your writeData() and readData() operations could give more insights for solving the problem :)

Upvotes: 0

Arun Manivannan
Arun Manivannan

Reputation: 4313

Reentrant lock is your best bet. And here's a relevant example.

http://www.carfey.com/blog/java-concurrency-part-2-reentrant-locks/

Upvotes: 2

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