<code java>
package nfs;

import java.io.InputStream;
import java.io.OutputStream;

public class StreamRef {
	InputStream in; 
	OutputStream out;
	public StreamRef(InputStream in, OutputStream out){
		this.in = in;
		this.out = out;
	}
	public InputStream getIn(){
		return this.in;
	}
	public OutputStream getOut(){
		return out;
	}
}
</code>