Byte to Binary Conversion java program source code

Byte to Binary Conversion java program source code .this code convert Byte data to binary data after
compile this code enter a number and find your binary converted number immediately.
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package javasample;
import java.io.*;
/**
 *
 * @author rajesh kumar shukla
 *

 writting them back out in binary representation.
*/
    public class BinaryConversion {
     BufferedInputStream brIn;
     PrintStream psOut;
    
     public static int BYTES_PER_LINE = 4;
    
         public BinaryConversion() {
         this(System.in,System.out);
         System.out.println("enter a nuber");
     }
    
         public BinaryConversion(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[]) {
         BinaryConversion kitty;
         kitty = new BinaryConversion();
         kitty.doit();
         System.exit(0);
     }
}