Re: load unicode text file, in J2ME

From:
"Darryl L. Pierce" <mcpierce@gmail.com>
Newsgroups:
comp.lang.java.programmer
Date:
Mon, 07 Aug 2006 07:07:53 -0400
Message-ID:
<44d711d8$0$24606$88260bb3@free.teranews.com>
Chameleon wrote:

I have write this member function for reading a text file in UC-16BE
format (means unicode, 2 bytes/char, big endian)

----------------------------------------------------------
static public String loadFile(String s) throws Exception {
    DataInputStream isr = new
DataInputStream(FileLoader.class.getResourceAsStream(s));
    s = "";
    for(int z = isr.available() / 2; z > 0; z--)
        s += isr.readChar();
    return s.substring(1);
}
----------------------------------------------------------


The slowness is the result of going out to where the data is stored in
pieces. What you should do instead is to load the content of your file
into a ByteArrayInputStream and then process it from there:

public String loadFile(String s) throws Exception {
     ByteArrayOutputStream baos = new ByteArrayOutputStream();
     byte[] buffer = new byte[4096];

     InputStream istream = myMidlet.getSourceAsStream(s);
     boolean done = false;

     while(!done) {
         int count = istream.ready(buffer);
         baos.write(buffer,0,count);
     }

     byte[] content = baos.toByteArray();
     ByteArrayInputStream bais = new ByteArrayInputStream(content);
     DataInputStream isr = new DataInputStream(bais);

     // now do your processing
}

--
Darryl L. Pierce <mcpierce@gmail.com>
Visit my homepage: <http://mcpierce.multiply.com>
"By doubting we come to inquiry, through inquiry truth." - Peter Abelard

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