gistfile1.java

@Path("time")
public class TimeResource {

    private final Clock clock;

    public TimeResource(Clock clock) {
        this.clock = clock;
    }

    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public String getCurrentTime() {
        return String.format("It's currently %s!", format(clock.now()));
    }

    private String format(Date now) {
        return new SimpleDateFormat("HH:mm").format(now);
    }
}