Writing byte to File

import java.io.*;
public class WriteFile {
    public static void main(String args[]) throws IOException
    {
        File f=new File(args[0]);
        byte b=01;
        if(!f.exists())
            System.out.println("\n"+args[0] +" is New File");
        else
       
    System.out.println("\n"+args[0]+ " is exists,will be overwritten.");
        System.out.print("\nOpening file "+args[0]);
        FileOutputStream f2=new FileOutputStream(f);
        System.out.println("\nFile Opened,Now Writting Contents "+args[0]);
        f2.write(b);
        f2.flush();
        System.out.println("\nContent Written..");
        System.out.println("\nFile Closing..");
        f2.close();
    }
}