How do I create, read and write binary records to a file?

Posted on 2006-11-01
Last Modified: 2010-03-31
This question is kinda basic, but it is something I cannot find any reference to do. I want to be able to create a record of a fixed size. Two Long integers stored in a record / class of some sort. Then I need to be able to write this data record by record to a binary file. I also need to know how to read this binary data back out of the file.

Please provide code examples.

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Question by:richardsimnett
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sciuriware earned 200 total points
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Use RandomAccessFile:

  RandomAccessFile f = new RandomAccessFile(new File("myfile"), "rw");
  long[] k = new long[2];

  k[0] = f.readLong();
  k[1] = f.readLong();
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To write the same 'k' after 1200 bytes:;

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Accepted Solution

objects earned 300 total points
ID: 17853072
agree with sciuriware, you'll find a good intro/example of using RAF here:

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