Code reviewHardcr-p102

Subject ConcurrencyLevel Senior~18 minCommon in Concurrency interviewsIndustries Software development

Question

Review this Java lazy singleton.

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.

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Code to reviewjava

1private static Config instance;2public static Config get() {3    if (instance == null) {4        synchronized (Config.class) {5            if (instance == null) instance = new Config();6        }7    }8    return instance;9}

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