在每种情况下都使用带有一定范围值的switch语句? [英] Using switch statement with a range of value in each case?
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问题描述
在Java中,是否可以编写一个switch语句,其中每种情况都包含多个值?例如(尽管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,Java中是否有类似的东西?还是应该只使用if
,else if
语句?
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没有这种类型的东西.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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