Byte to Binary Conversion

import java.io.*;

 /**

* BinCat is a simple class for reading bytes and

* writting them back out in binary representation.

*/

    public class BinCat {

     BufferedInputStream brIn;

     PrintStream psOut;

   

     public static int BYTES_PER_LINE = 4;

   

         public BinCat() {

         this(System.in,System.out);

     }

   

         public BinCat(InputStream in, OutputStream out) {

         brIn = new BufferedInputStream(in);

         if (out instanceof PrintStream)

         psOut = (PrintStream)out;

         else

         psOut = new PrintStream(out);

     }

   

    

   

         public void doit() {

         int ch, cv, bit, cnt;

             try {

                 for(cnt = 0, ch = brIn.read(); ch >= 0; ch = brIn.read()) {

                 cv = ((int)ch & 0x00ff);

                     for(bit = 7; bit >= 0; bit--) {

                     if ((cv & (2 << bit)) > 0)

                     psOut.print("1");

                     else

                     psOut.print("0");

                 }

                 cnt++;

                 if ((cnt % BYTES_PER_LINE) == 0)

                 psOut.println("");

             }

         } catch (IOException e) { }

         return;

     }

   

     /**

     * Test main for BinCat

     */

         public static void main(String args[]) {

         BinCat kitty;

         kitty = new BinCat();

         kitty.doit();

         System.exit(0);

     }

}