在Java中，在每种情况下使用带有一系列值的switch语句？ [英] In Java,Using switch statement with a range of value in each case?

问题描述

在Java中是否可以编写一个switch语句，其中每个case包含多个值？例如（虽然以下代码显然不起作用）：

In Java is it possible to write a switch statement where each case contains more than one value? For example (though clearly the following code won't work):

switch (num) {
    case 1 .. 5:
        System.out.println("testing case 1 to 5");
        break;
    case 6 .. 10:
        System.out.println("testing case 6 to 10");
        break;
}

我认为这可以在Objective C中完成，是否有类似的事情在Java的？或者我应该只使用 if ， else if 语句而不是？

I think this can be done in Objective C, are there a similar thing in Java? Or should I just use if, else if statements instead?

推荐答案

Java没有那种。为什么不执行以下操作？

Java has nothing of that sort. Why not just do the following?

public static boolean isBetween(int x, int lower, int upper) {
  return lower <= x && x <= upper;
}

if (isBetween(num, 1, 5)) {
  System.out.println("testing case 1 to 5");
} else if (isBetween(num, 6, 10)) {
  System.out.println("testing case 6 to 10");
}

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