import java.io.*;

/**
 * Data Copy Class
 */
public class CopyData{
    /**
     * Constructer of this.
     *
     * @param org_file input file name.
     * @param dst_file input file name.
     */
    public CopyData(String org_file, String dst_file){
	try{
	    DataInputStream  in = new DataInputStream(new FileInputStream(org_file));
	    DataOutputStream out= new DataOutputStream(new FileOutputStream(dst_file));
	    int b= in.read();

	    while(b!=-1){
		out.write(b);
		b= in.read();
	    }

	    in.close();
	    out.close();
	}catch(IOException e){
	    e.printStackTrace();
	}
    }

    /**
     * main
     */
    public static void main(String[] args){
	if(args.length!=2){
	    System.err.println("usage : java CopyData <org_file> <dst_file>");
	}else{
	    new CopyData(args[0], args[1]);
	}
    }
}