java : writing large files?

Asked 2010-01-07T02:38:24.410

Greetings , I get huge number of records from database and write into a file.I was wondering what the best way to write huge files. (1Gb - 10Gb).

Currently I am using BufferedWriter

BufferedWriter mbrWriter=new BufferedWriter(new FileWriter(memberCSV));
while(done){
 //do writings
}
mbrWriter.close();

java java-io bufferedwriter

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1 Answer

Im not 100% sure, but it appears tha BufferedReader loads the data into a Buffer in the RAM. Java can use 128mb Ram (unless otherwise specified), so the BufferedReader will likely overflow java's memory causing an error. Try using InputStreamReader and FileInputStream to read and then store the data in a char, then just write that char using a FileOutputStream.

answered 2010-03-27T21:36:28.110

java : writing large files?

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