//biFileDemo.Java
import java.io.*;

public class FileInputStreamDemo{
  public static void main(String args[]){
  	try{
  	 File infile = new File("c:\\cmd.txt");
  	 File myfile = new File("c:\\mytest.txt");
  	 
		 FileInputStream in =new FileInputStream(infile);
     FileOutputStream out=new FileOutputStream(myfile);
     System.out.println("file size:"+in.available());
     byte b[]=new byte[in.available()];
     in.read(b);
     out.write(b);
     System.out.println("file copyed and renamed");
     in.close();;
     out.close();
     }catch(IOException e){}
     
   }
}