How can you make idle processors pick up java work?

Tue, 31 Jul 2012 12:30:47 +0000 (UTC)

You might have more luck reading the whole file at once

 Well, this I have tried also, but I am getting java.lang.OutOfMemoryError:
Java heap space relating to the HeapCharBuffer
import java.nio.file.FileSystems;
import java.nio.file.Path;
import java.nio.channels.FileChannel;
import java.nio.MappedByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CodingErrorAction;
import java.nio.charset.CharacterCodingException;


// __
public class NIO06Test{
 private static final String aNWLn = System.getProperty("line.separator");
 private static final String aOEnc = "UTF-8";
// __
 public static void main(String[] aArgs){
  if((aArgs != null) && (aArgs.length == 1)){
// __
   long lTm00 = System.currentTimeMillis();

   Path IFlPth = FileSystems.getDefault().getPath(aArgs[0]);
   File IFl = IFlPth.toFile();
    long lIFlL = IFlPth.toFile().length();
// __
    Charset InChrSt = Charset.forName(aOEnc);
    CharsetDecoder InDec = InChrSt.newDecoder();
// __
// __
     FileInputStream FIS = new FileInputStream(IFl);
     FileChannel IFlChnl = FIS.getChannel();
     int iChnlSz = (int)IFlChnl.size();
     MappedByteBuffer MptBytBfr =,
0, iChnlSz);
     CharBuffer MptChrBfr = InDec.decode(MptBytBfr);
// __
    }catch(CharacterCodingException ChrKdX){ ChrKdX.printStackTrace(); }
     catch(FileNotFoundException FNFX){ FNFX.printStackTrace(); }
      catch(IOException IOX){ IOX.printStackTrace(); }
  else{ System.err.println("// __ usage:" + aNWLn + aNWLn + " java
NIO2_newBufferedReader02Test \"<text file>\"" + aNWLn); }
$ javac -encoding utf8
$ date; java -Xms256m -Xmx1024m -Xincgc -Dfile.encoding=utf8 NIO06Test
/media/sdb1/tmp/eng_news_2006_10M-sentences.txt; date;
Tue Jul 31 08:26:49 UTC 2012
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
 at java.nio.HeapCharBuffer.<init>(
 at java.nio.CharBuffer.allocate(
 at java.nio.charset.CharsetDecoder.decode(
 at NIO06Test.main(
Tue Jul 31 08:26:49 UTC 2012

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