Re: DataInputStream

From:
=?ISO-8859-1?Q?Arne_Vajh=F8j?= <arne@vajhoej.dk>
Newsgroups:
comp.lang.java.programmer
Date:
Sun, 06 Nov 2011 17:48:06 -0500
Message-ID:
<4eb70ea5$0$287$14726298@news.sunsite.dk>
On 10/5/2011 10:17 AM, bob wrote:

On Oct 5, 2:07 am, Robert Klemme<shortcut...@googlemail.com> wrote:

On Oct 5, 8:17 am, bob<b...@coolgroups.com> wrote:

         float[] getVertices3(String filename) {

                 try {
                         AssetManager am = this.getResources().getAssets();
                         InputStream is = am.open(filename);
                         DataInputStream dis = new DataInputStream(is);
                         int numfloats=dis.readInt();

                         float[] floatArray = new float[numfloats];

                         for (int ctr = 0; ctr< floatArray.length; ctr++) {
                                 floatArray[ctr] = dis.readFloat();
                         }
                         return floatArray;

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

         }


That's OK. Now, what's the issue?


The issue is that it's too slow.


Rather unlikely that readFloat is the culprit.

Try replace:

InputStream is = am.open(filename);
DataInputStream dis = new DataInputStream(is);

with:

InputStream is = new BufferedInputStream(am.open(filename), 65536);
DataInputStream dis = new DataInputStream(is);

Arne

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