Java程序设计入门经典switch 的相关内容

文章 2017-08-01 来自：开发者社区

《Java 7程序设计入门经典》一3.6　嵌套的switch语句

3.6　嵌套的switch语句外层switch语句可能将switch语句作为其语句序列的一部分。这称为嵌套的（nested）switch语句。甚至在内层和外层的switch语句可以包含相同的case常数，也不会有冲突。例如，下面的代码片段是完全可行的：

文章 2017-08-01 来自：开发者社区

《Java 7程序设计入门经典》一3.5　switch语句

3.5　switch语句 Java的第二个选择语句是switch语句。switch语句提供了多个分支。于是，它使程序可以在多个选项中做出选择。尽管一系列嵌套的if语句可以执行多路测试，在许多情况下，switch语句是更有效的方法。它像这样工作：表达式的值与一系列的常数比较。当找到一个选项时，执行与这个匹配项相关的语句序列。switch语句的一般形式为：对于JDK 7以前的Java版本，控制sw....

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更新时间 2023-04-13 10:10:01

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