java floating point error when reading from binary file
<p>I have a floating point number stored in a binary file 0.9999833107. When I read the number in it is either truncated or extended depending on whether I use float or double to store it. I read in the binary with the following code:</p>

<pre><code>public double readFloat(RandomAccessFile fp){

    byte[] data = new byte[4];

    try {

        data[0] = fp.readByte();
        data[1] = fp.readByte();
        data[2] = fp.readByte();
        data[3] = fp.readByte();

    } catch (IOException e) {
            e.printStackTrace();
            return 0;
    }

    ByteBuffer buffer = ByteBuffer.wrap(data);

    return buffer.getDouble();
}
</code></pre>

<p>This method returns 0.9999833106994629. When I change the method to output a float the value returned is 0.9999833. Does anyone have any idea how I can get the number out that was written into the file?</p>
