现有代码片段:String s="123";String sl=S+456;请问sl的结果是哪项?()A、123456B、579C、编译错误D、运行时抛出异常
现有代码片段:String s="123";String sl=S+456;请问sl的结果是哪项?()
- A、123456
- B、579
- C、编译错误
- D、运行时抛出异常
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