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每日一坑：Constant expression required：Java的switch 选择枚举问题_LocalHost::8080的博客-CSDN博客_constant expression required 枚举
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Why do I get 'case expressions must be constant expressions' in switch case statements in Java? - Quora
3.4.3. Switch Statements
Java中，使用switch条件控制语句，case为枚举常量时报Constant expression required 错误_Your_Lie的博客-CSDN博客_constant expression required
Why do I get 'case expressions must be constant expressions' in switch case statements in Java? - Quora
Java 中switch case 枚举值使用报错：case expressions must be constant expressions_CoralZhou的博客-CSDN博客
Why do I get 'case expressions must be constant expressions' in switch case statements in Java? - Quora
