import java.io.*;
import java.util.concurrent.*;
-public class AltosFlightReader {
+public abstract class AltosFlightReader {
public String name;
public int serial;
- public void init() { }
+ public void init() {}
- public AltosState read() throws InterruptedException, ParseException, AltosCRCException, IOException { return null; }
+ public abstract AltosState read() throws InterruptedException, ParseException, AltosCRCException, IOException;
- public void close(boolean interrupted) { }
+ public abstract void close(boolean interrupted);
public void set_frequency(double frequency) throws InterruptedException, TimeoutException { }