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51CTO
1 年
Java 中 switch 语句支持字符串类型的历史和原理
为了让 switch 语句更高效,编译器还会做一些优化。比如,如果 case 标签不多,编译器可能会直接用一系列的 if-else 语句来代替 switch 语句。 想象一下这个场景:你正在写一个水果识别的程序,用户输入「苹果」就要执行特定逻辑。在 Java 7 之前,你只能 ...
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