Re: DataOutputStream how make wirte dev/null

From:

Mark Space <markspace@sbc.global.net>

Newsgroups:

comp.lang.java.programmer

Date:

Mon, 08 Jun 2009 11:53:26 -0700

Message-ID:

<s%cXl.20018$D32.152@flpi146.ffdc.sbc.com>

Rafal(sxat) wrote:

How create DataOutputStream for writing all data to NULL because I have make
simulate write because I have calc Content-Length for make POST to server

I'm not sure exactly what you mean by "write to NULL" but if you just
need a sink for data, this will do:

package fubar;

import java.io.DataOutputStream;
import java.io.IOException;
import java.io.OutputStream;

public class WriteSink extends OutputStream {

     @Override
     public void write(int b) {
     }

     @Override
     public void write(byte[] b) {
     }

     @Override
     public void write(byte[] b, int offset, int len ) {
     }

     public static void main(String[] args) throws IOException {
         DataOutputStream dos = new DataOutputStream( new WriteSink() );

         System.out.println("Start write sink...");
         final int WRITES = 1*1000*1000;
         for( int i =0; i < WRITES; i++ ) {
             dos.write( i );
         }
         dos.flush();
         dos.close();
         System.out.println("Done.");
     }
}