Writing a large XML file with Out Of Memory Error Java

Question

I am developing an app for android, I need to create a rather large XML file.

I have tried this with a DOM document however because it resides in memory it throws an 'out of memory' error.

Can someone suggest an alternative solution? This is a XML file create from scratch.

did you get a chance to check this: ibm.com/developerworks/xml/library/x-tipbigdoc/index.html? — Vikdor
– Vikdor, Commented Sep 10, 2012 at 13:51

Peter Lawrey · Accepted Answer · 2012-09-10 13:52:00Z

2

I would write the XML to a Stream or Writer progressively as to traverse the data you want to turn into XML. This way you don't need much more memory than the original data.

answered Sep 10, 2012 at 13:52

Peter Lawrey

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2 Comments

Hank Over a year ago

In the in end I used a writer, it was a little on the slow side but did the job. I managed to create a 700mb xml file. Thankyou to all, each answer was helpful!

Peter Lawrey Over a year ago

I would make sure you are using a BufferedWriter. Without this it can be 10x slower.

Aman J · Accepted Answer · 2012-09-10 14:03:02Z

1

You will always go out of memory for Large Data size. How about dividing your Data and creating small chuncks and then appending all those together.

Or an other option is using SAX parser which consumes less memory.

answered Sep 10, 2012 at 14:03

Aman J

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Rein · Accepted Answer · 2012-09-10 14:14:03Z

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Streaming XML is the way to go. The most 'vanilla' approach is probably using StAX: http://docs.oracle.com/javaee/5/tutorial/doc/bnbem.html#bnbff

answered Sep 10, 2012 at 14:14

Rein

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