在每种情况下都使用具有值范围的 switch 语句? [英] 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(尽管显然以下代码不起作用):

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，Java中有类似的事情吗?或者我应该只使用 if, else if 语句代替?

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 没有这样的东西.为什么不直接执行以下操作?

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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