Can Java\'s Switch Statement Handle Value Ranges?

Can Java's Switch Statement Utilize Value Ranges in Each Case?

In Java, a switch statement evaluates a single value against a set of case labels. However, the case labels can only contain individual values, not ranges. This may lead you to question if such behavior is possible, drawing inspiration from languages like Objective C.

Java's Approach to Handling Ranges

Unlike Objective C, Java does not natively support value ranges within switch case statements. This means the code snippet you provided will result in a compilation error.

Instead, Java provides a workaround using logical comparisons. You can define a helper method like 'isBetween' to determine if a value falls within a range:

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

Using this method, you can rewrite your switch statement using if-else if constructs:

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");
}

By utilizing this approach, you can achieve the functionality of value ranges within switch cases. While not as concise as Objective C's syntax, it remains a reliable solution within Java.

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