Code Room
Code reviewHard
Question
Review this Java session-id generator.
What a strong answer looks like
Separate real bugs from style. Rank issues by severity, point at the root cause rather than the symptom, and suggest a concrete fix — specific and kind.
Learn the concepts
import java.util.Random; public class SessionIds { private static final Random RNG = new Random(System.currentTimeMillis()); public static String newSessionId() { long id = RNG.nextLong(); return Long.toHexString(id); }}Run or narrate your approach, then ask the coach.